TEAC UD-507 USB DAC-Headphone Amplifier Owner’s Manual

TEAC UD-507 USB DAC-Headphone Amplifier

Product Information

Product Specifications:

• Model: UD-507
• Type: USB DAC/Headphone Amplifier
• Compliance: Class B digital apparatus
• Power Supply: 120V
• Safety Standards: UL Listed
• Manufacturer: Not specified

Product Usage Instructions

Safety Instructions:
Before using the UD-507 USB DAC/Headphone Amplifier, please read and adhere to the following safety instructions:

• Do not remove the cover or back of the device as there are no user-serviceable parts inside.
• Avoid exposing the appliance to rain or moisture to prevent fire or shock hazards.
• Do not open the external cases to expose the electronics.
• For any issues, contact the store where you purchased the unit for service referral.
• Use only with specified attachments/accessories and near a protective grounding connection.

Operating Instructions:
Follow these steps to operate the UD-507 USB DAC/Headphone Amplifier:

1. Connect the device to a power source using the provided power supply cord.
2. Connect your headphones or audio output device to the amplifier using the appropriate cables.
3. Turn on the amplifier using the power button and adjust the volume to your preference.
4. Select the input source if applicable and enjoy high-quality audio output.

Battery Precautions:
If your device includes batteries, please follow these precautions:

• Use batteries of the same type and avoid mixing different types.
• If batteries are not used for an extended period, remove them to prevent leakage.
• If leakage occurs, clean the compartment and replace it with new batteries of the specified type.
• Avoid heat, disassembly, or exposure to extreme conditions to prevent accidents.

Frequently Asked Questions (FAQ):

Q: Can I use the UD-507 with any headphones?

A: Yes, you can use the UD-507 with a wide range of headphones as long as they are compatible with the amplifier's output.

Q: How do I clean the UD-507?

A: Use a dry cloth to gently clean the exterior of the device. Do not use any liquids to clean the electronics.

Q: What should I do if I experience issues with the amplifier?

A: Contact the store where you purchased the unit for service referral. Do not attempt to repair the device yourself.

IMPORTANT SAFETY INSTRUCTIONS

CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN.

CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER- SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

• The lightning flash with the arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
• The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

WARNING:
TO PREVENT FIRE OR SHOCK HAZARDS, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

CAUTION

• DO NOT REMOVE THE EXTERNAL CASES OR CABINETS TO EXPOSE THE ELECTRONICS. NO USER-SERVICEABLE PARTS ARE INSIDE.
• IF YOU ARE EXPERIENCING PROBLEMS WITH THIS PRODUCT, CONTACT THE STORE WHERE YOU PURCHASED THE UNIT FOR A SERVICE REFERRAL. DO NOT USE THE PRODUCT UNTIL IT HAS BEEN REPAIRED.
• USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
  1. Read these instructions.
  2. Keep these instructions.
  3. Heed all warnings.
  4. Follow all instructions.
  5. Do not use this apparatus near water.
  6. Clean only with a dry cloth.
  7. Do not block any ventilation openings. Install by the manufacturer’s instructions.
  8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
  9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for the replacement of the obsolete outlet.
  10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
  11. Only use attachments/accessories specified by the manufacturer.
  12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
  13. Unplug this apparatus during lightning storms or when unused for long periods.
  14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
• The apparatus draws nominal non-operating power from the AC outlet with its POWER or STANDBY/ON switch not in the ON position.
• The mains plug is used as the disconnect device; the disconnect device shall remain readily operable.
• Caution should be taken when using earphones or headphones with the product because excessive sound pressure (volume) from earphones or headphones can cause hearing loss.

CAUTION

• Do not expose this apparatus to drips or splashes.
• Do not place any objects filled with liquids, such as vases, on the apparatus.
• The handle-like parts on the left and right sides of the front panel are decorative. Do not put your fingers through them or use them to carry the unit.
• Do not install this apparatus in a confined space such as a bookcase or similar unit.
• The apparatus should be located close enough to the AC outlet so that you can easily reach the power cord plug at any time.
• If the product uses batteries (including a battery pack or installed batteries), they should not be exposed to sunshine, fire or excessive heat.
• CAUTION for products that use replaceable lithium batter-ies: there is a danger of explosion if a battery is replaced with an incorrect type of battery. Replace only with the same or equivalent type.

WARNING
Products with Class! construction is equipped with a power supply cord that has a grounding plug. The cord of such a product must be plugged into an AC outlet that has a protective grounding connection.

IN THE USA/CANADA, USE ONLY ON 120V SUPPLY.

Precautions concerning batteries
Misuse of batteries could cause them to rupture or leak leading to fire, injury or the staining of nearby things. Please read and observe the following precautions.

• Be sure to insert the batteries with correct positive ( ) and negative ( ) orientations.
• Use batteries of the same type. Never use different types of batteries together.
• If the remote control is not used for a long time (more than a month), remove the batteries to prevent them from leaking.
• If the batteries leak, wipe away the leakage inside the battery compartment and replace the batteries with new ones.
• Do not use batteries of types other than those specified. Do not mix new batteries with old ones or use different types of batteries together.
• Do not heat or disassemble batteries. Never throw batteries into a fire or water.
• Do not carry or store batteries with other metallic objects. The batteries could short circuit, leak or explode.
• Never recharge a battery unless it is confirmed to be a rechargeable type.
• Do not expose batteries to extremely low air pressure as it could result in an explosion or leakage of flammable liquids or gases.

Model for the USA

Supplier’s Declaration of Conformity

• Model number: UD-507
• Trade name: TEAC
• Responsible party: 11 Trading Company, LLC
• Address: 3502 Woodview Trace #200 Indianapolis, IN 46268 U.S.A. URL: https://11tradingcompany.com/contact-us/

This device complies with Part.15 of FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interfer-ence received, including interference that may cause undesired operation.

Information
This equipment has been tested and found to comply with the limits for a Class B digital device, under Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equip-ment generates, uses, and can radiate radio frequency energy and, if not installed and used by the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the equipment and/or the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

CAUTION
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Model for Canada
This Class B digital apparatus complies with Canadian ICES-003.

For European Customers
Disposal of electrical and electronic equipment and batteries and/or accumulators

• All electrical/electronic equipment and waste batteries/accumulators should be disposed of separately from the municipal waste stream via collection facilities designated by the government or local authorities.

• By disposing of electrical/electronic equipment and waste batteries/accumulators correctly, you will help save valuable resources and prevent any potential negative effects on human health and the environment.

• Improper disposal of waste electrical/electronic equipment and batteries/accumulators can have serious effects on the environment and human health because of the presence of hazardous substances in the equipment.

• The Waste Electrical and Electronic Equipment (WEEE) symbols, which show wheeled bins that have been crossed out, indicate that electrical/electronic equip-ment and batteries/accumulators must be collected
  and disposed of separately from household waste.
  If a battery or accumulator contains more than the specified values of lead (Pb), mercury (Hg), and/or cadmium (Cd) as defined in the Battery Directive (2006/66/EC, 2013/56/EU), then the chemical symbols Pb, Hg, Cd for those elements will be indicated beneath the WEEE symbol.

• Return and collection systems are available to end users. For more detailed information about the disposal of old electri-cal/electronic equipment and waste batteries/accumulators, please contact your city office, waste disposal service or the shop where you purchased the equipment.

The nameplate is located on the bottom of the unit as shown below.

Compliance with radio transmitter and interference

• This product has the function of a broadband transmitter using a 2.4GHz Band.
• Use frequency range: 2402 MHz – 2480 MHz
• Maximum output power: Bluetooth® Class 2 (less than 2.5 mW)
• Please use only in the country where you purchased the product. Depending on the country, restrictions on the use of Bluetooth wireless technology might exist.

Model for the USA

• Labelling of authorization
• FCC ID: XEG-UD507

Model for Canada

Compliance of radio transmitter
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:

1. This device may not cause interference.
2. This device must accept any interference, including interference that may cause undesired operation of the device.

Labelling of authorization
IC: 1559C-UD507

Model for EEA (European Economic Area)
Hereby, TEAC Corporation declares that the radio equipment type complies with Directive 2014/53/EU., and the other Directives, and Commission Regulations.

Model for the UK
Hereby, TEAC CORPORATION declares that the radio equipment type complies with UK Radio Equipment Regulations.

The full text of the EU or UK declaration of conformity is available at the following internet address. Please contact us by e-mail. https://teacsupport.aqipa.com/.

Radiation Exposure requirements
This equipment meets the regulation, which is recognized internationally, for the case of human exposure to radio waves generated by the transmitter.

Statement of compliance

Model for USA/Canada
This equipment complies with FCC/IC radiation exposure limits set forth for an uncontrolled environment and meets the FCC radio frequency (RF) Exposure Guidelines and RSS-102 of the IC radio frequency (RF) Exposure rules. This equipment has very low levels of RF energy that it deemed to comply without maximum permissive exposure evaluation (MPE). But it should be installed and operated keeping the radiator at least 20 cm or more away from the person’s body (excluding extremities: hands, wrists, feet and ankles).

Model for EEA and UK
This equipment complies with EN.62479; Assessment of electronic and electrical equipment related to human exposure restrictions for electromagnetic fields.

• MQA and the Sound Wave Device are registered trademarks of MQA Limited © 2016 “DSD” is a registered trademark.
• The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by TEAC CORPORATION is under license.
• The LHDC logo is a registered trademark of Savitech Corporation.
• Qualcomm® aptX™ is a product of Qualcomm Technologies, Inc. and/or its subsidiaries.
• Qualcomm® is a trademark of Qualcomm Incorporated, registered in the United States and other countries. aptX is a trademark of Qualcomm Technologies International, Ltd., registered in the United States and other countries.
• Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
• Apple, Mac, OS X and macOS are trademarks of Apple Inc., registered in the U.S. and other countries.
• App Store is a service mark of Apple Inc.
• Android is a trademark of Google Inc.
• Google Play is a trademark of Google Inc.
• LDAC™ and LDAC logo are trademarks of Sony Corporation.
• Bulk Pet is a registered trademark of INTERFACE CO., LTD.
• Other company names, product names and logos in this document are the trademarks or registered trademarks of their respective owners.
• Information about copyrights and licensing related to open-source software is provided in the separate “Important Notice Regarding Software” document.

Included accessories

• Check to be sure the box includes all the supplied accessories shown below.
• Please contact the store where you purchased this unit if any of these accessories are missing or have been damaged during transportation.
• Power cord × 1
• Remote control (RC-1341) × 1
• Batteries for remote control (AAA) × 2
• Foot pads × 3
• Owner’s manual (this document, including warranty) × 1
  • For information about the warranty, users living in the USA and Canada should see pages  40–41 and the back cover (warranty document). Users living in Europe and other regions should see page 41.

Maintenance

• Wipe dirt from the top cover and other panel surfaces using a soft cloth that has been slightly dampened with a diluted neutral cleanser.
• Do not wipe with chemical cleaning cloths, thinner or other chemical agents. Doing so could damage the surface.

For your safety, disconnect the power cord from the outlet before cleaning.

Using the TEAC International Site

• You can download updates for this unit from the TEAC International Site: https://teac.jp/int/.
• Click LANGUAGE at the top right of the page and select the desired language to access a page in the corresponding language.

Before use

Placement precautions

• Do not install this unit in a location that could become hot. This includes places that are exposed to direct sunlight or near a radiator, heater, stove or other heating equipment. Moreover, do not place it on top of an amplifier or other equipment that generates heat. Doing so could cause discolouration, deformation or malfunction.
• Avoid locations that are subject to vibrations or exposed to excessive dust, cold or moisture.
• When installing this unit, leave a little space (at least 3 cm or 1″) between it and the walls and other devices to allow good heat dissipation.
• If you put it in a rack, for example, leave at least 5 cm (2″) open above and 10  cm (4″) open behind it. Failure to provide these gaps could cause heat to build up inside and result in fire.
• Do not move the unit during use.
• The voltage supplied to the unit should match the voltage printed on the back of the unit. If you are in any doubt regarding this matter, consult an electrician.
• Do not open the body of the unit as this might result in damage to the circuitry or cause electric shock. If a foreign object should get into the unit, contact your dealer.
• When removing the power plug from the wall outlet, always pull directly on the plug; never yank on the cord.

Note about placement
The steel feet are loosely attached to the bottom of the unit, leaving slight gaps. For this reason, the feet will move slightly from the bottom when the unit is lifted.

This unit is designed to rest on the feet when it is placed so that the feet do not apply unnecessary stress to the body.

• The feet will move slightly from the bottom of the unit, but this is not a defect.
• Apply the included pads to the bottoms of the footstands to avoid scratching the surface where the unit is placed.
• The top panel of this unit is attached with some play. The panel will move slightly, but this is not a defect.

Connections

Connections (front)

Connecting headphones

CAUTION

• While wearing headphones, do not connect or disconnect them turn the unit on or put it on standby.
• Doing so could result in a sudden loud noise that could harm your hearing.
• Before putting headphones on, always set the volume to a minimum (the display should show “0” when set to “STEP (0-100)” or “−∞ dB” when set to “dB”) (page 17).

PHONES 6.3 mm
Connect headphones with a standard 6.3mm (1/4″) stereo plug.

PHONES XLR
Connect headphones with a 4-pin XLR plug.

PHONES 4.4 mm
Headphones that conform to the JEITA RC-8141C standard (with a 4.4mm 5-pole stereo plug) can be connected.

Wiring illustration

Connections (back)

• A. USB Type-B port (USB)

  • Use this to input digital audio from a computer. Connect it to a computer’s USB port.

  • For connection, use a commercially available cable that has a Type-B (USB 2.0) connector and a connector that suits the USB port of the computer being used.
    CAUTION

  • Before connecting a computer that is running a Windows OS, you must install the dedicated driver on the computer.

  • Proper connection is not possible with a Windows computer that does not have this driver installed.

• B. Analog audio input (LINE IN) connectors
  Use these to input stereo analog audio. Connect the audio output connectors of a cassette deck, CD player or other audio output equipment to these.
  Use commercially available cables for connections.

  • XLR: XLR cables
  • RCA: RCA cables
    Connect this unit’s R input connector to the R output connector of the audio output device, and this unit’s L input connector to the L output connector of the other device.

• C. CLOCK sync input connector

  • Use this connector to input 10MHz clock synchronization signals
  • Use a commercially available BNC coaxial cable (50 Ω) for connection.
  • Clock sync is only possible when the input source is USB, COAXIAL, OPTICAL or Bluetooth.

• D. 12V TRIGGER output connector

  • This connector is for controlling the power of a connected device.
  • Do not connect anything to this connector when not using it.
  • Use a commercially available mono mini-plug cable for connection.

• E. Power inlet (~IN)
  Connect the supplied power cord to this inlet. After all other connections are complete, connect the power cord’s plug to a wall outlet.

  • Do not use any power cord other than the one included with this unit. The use of other power cords could result in fire or electric shock.
  • Disconnect the power plug from the outlet if you have not used the unit for a long time.

• F. OPTICAL digital audio input connector

  • Use this to input digital audio. Connect an optical digital audio output connector of an audio device here.
  • For connection, use a commercially available optical digital cable that has a square connector (TOSLINK) and a connector that suits the connector of the device being used.

• G. RCA COAXIAL digital audio input connector

  • Use this to input digital audio. Connect a coaxial digital audio output connector of an audio device here.
  • Use a commercially available RCA coaxial digital cable for connection.

• H. Analog audio output (LINE OUT) connectors

  • Use these to output 2-channel analog audio. Connect these

  • XLR or RCA connectors to a stereo amplifier or powered speakers.
    Use commercially available cables for connections.

  • XLR: XLR cables

  • RCA: RCA cables

  • Connect an R connector on this unit to an R connector on the amplifier, and connect the corresponding unit L connector to the corresponding amp L connector.

Complete all other connections before turning the unit on.

• Carefully read the manuals of the devices that you are connecting and follow their instructions when making connections.
• Do not bundle connecting cables with power cords. Doing so could cause noise.
• Connect all plugs completely.

Synchronizing external devices with power operations of this unit (trigger function)
The power of a connected amp or another device that supports trigger functions can be synchronized with the power operations of this unit.

Use a commercially available mono mini-plug cable for connection.

12V TRIGGER OUT connector

• When this unit is turned on, it outputs 12 V.
• By connecting this unit’s trigger output connector to a device that supports trigger input (e.g., an amplifier or powered speaker), the power supply of that device can be synchronized with the power operations of this unit.

UD-507

Connecting external clock output devices

• Clock sync is possible when the input source is USB, COAXIAL, OPTICAL or Bluetooth (page 33).
• When the input source is COAXIAL, OPTICAL or Bluetooth, however, both this unit and the digital audio output device must be synchronized with the same external clock.

• If clock sync is set to ON when a CD player or other digital output device is not clock synchronized, audio skipping and dropouts could occur.

Upconversion

• The upconversion function can be used with input sources other than analog audio.
• The relationships between input sampling frequencies and sampling frequencies after upconversion are as follows.

Digital

audio input

| USB| OFF| 2× Fs| 4× Fs| 8× Fs
Input sampling

frequency

| Sampling frequency after

upconversion

[kHz]| [kHz]
32| −| 32| 64| 128| 256
44 .1| 44 .1| 44 .1| 88 .2| 176 .4| 352 .8
88 .2| 88 .2| 88 .2| 88 .2| 176 .4| 352 .8
176 .4| 176 .4| 176 .4| 176 .4| 176 .4| 352 .8
−| 352 .8| 352 .8| 352 .8| 352 .8| 352 .8
48| 48| 48| 96| 192| 384
96| 96| 96| 96| 192| 384
192| 192| 192| 192| 192| 384
−| 384| 384| 384| 384| 384

These values are not converted.

• The maximum upconversion is 8× Fs.
• Upconversion is not possible when the input is DSD.
• The upconversion setting is ignored during MQA playback.

MQA

MQA (Master Quality Authenticated)

• MQA is an award-winning British technology that delivers the sound of the original master recording. The master MQA file is fully authenticated and is small enough to stream or download.
  Visit mqa.co.uk for more information.

• The UD-507 includes MQA technology, which enables you to play back MQA audio files and streams, delivering the sound of the original master recording.

‘MQA’ or ‘MQA.’ indicates that the product is decoding and playing an MQA stream or file, and denotes provenance to ensure that the sound is identical to that of the source material. “MQA.” indicates it is playing an MQA Studio file, which has either been approved in the studio by the artist/producer or has been verified by the copyright owner.

• This unit can decode MQA streams and files only when the play-back source is USB, COAXIAL or OPTICAL.
• When conducting MQA decoding of signals from COAXIAL or OPTICAL sources, do not use signal processing, including upn-version or digital filtering on the digital output device, because signals need to be received as bit-perfect.

Display example during MQA playback

Main unit parts and functions

A. STANDBY/ON switch
Use this to put the unit into standby mode or turn it on.

• If the display is off even though the STANDBY/ON switch is set to ON, the cause is usually one of the following.
  • The power is on, but DIMMER (display brightness) is set to AUTO OFF (page 22).
  • The automatic power-saving function has been activated, putting the unit on standby (page 23).
  • The power cord is disconnected.

To turn the unit on when the automatic power saving function has been activated, put the unit on standby, press the ON button on the remote control, or set the STANDBY/ON switch to STANDBY once and then back to ON.

B. CLOCK indicator
This shows the clock synchronization status.

• Lit:
  The unit is currently synchronized with the clock from the CLOCK sync input connector.

• Blinking:
  No clock is being input, or the unit is trying to synchronize with the clock signal.

• Unlit:
  The external clock is not being used.

  • See page 26 for clock sync settings.

C. Headphone connectors
Connect headphones plugs (standard 6.3mm (1/4″) stereo, 4-pin XLR or 4.4mm 5-pole stereo) here.

D. OUTPUT button
Press this once to show the current output. Press this again to switch which connector outputs analog audio in the following order.

E. USB Type-C port ( )

• Use this to input digital audio from a computer. Connect it to a computer’s USB port.
• Please prepare a commercially available cable that is capable of data transfer and has a Type-C connector and a connector that suits the USB port of the computer being used.
• This cannot be used with a cable specified only for charging.

ATTENTION

• Before connecting a computer that is running a Windows OS, you must install the dedicated driver on the computer (page 27).
• Proper connection is not possible with a computer that does not have this driver installed.

F. Remote control signal receiver
This receives signals from the remote control. When operating the remote control, point it at the remote control signal receiver.

G. MENU button

• Press this to enter setting mode (page 21).
• Press this when in setting mode to return to the previous screen.

H. INPUT knob

• Use this to switch between input sources.
• Turn this when the menu is open to change the item shown or the setting value.
• Press this to use it as an ENTER button.

I. Display
This display shows information about the audio playing back and menu screens.

J. VOLUME knob
Use this to adjust the volume. Turn it right to increase and left to decrease the volume.

• To enable adjustment of this unit’s analog audio output volume, set LINE OUT LEVEL to VARIABLE (page 24). This will enable adjustment of the analog output level using the VOLUME knob on the front of the unit.
• Volume settings are retained separately for each audio output.

Automatic power saving function

• This unit has an automatic power-saving function (page 23).
• By default, the setting is ON.
• The unit will automatically enter standby mode if no audio is output and no operation is conducted for about 30 minutes. The automatic power-saving time setting can be used to change the amount of time until the unit enters standby mode (page 23).
• Set the automatic power saving function to OFF to disable it (page 23).

Display brightness

• You can adjust the brightness of the unit’s display (page 22).
• By default, the setting is Slightly BRIGHT (Stays lit dimly).
• When set to AUTO OFF (automatic illumination off ), the display turns off when not being operated.

Using the remote control

Precautions for use
Misuse of batteries could cause them to rupture or leak, which might result in fire, injury or the staining of nearby materials. Please carefully read and observe the precautions on page 3.

• Point the remote control toward the remote control signal receiver on the main unit from a distance of 5 m (16 ft) or less. Do not place obstructions between the main unit and the remote control.
• The remote control might not work if the remote control signal receiver on the unit is exposed to direct sunlight or bright light. If this occurs, try moving the unit.
• Beware that the use of this remote control could cause the unintentional operation of other devices that can be controlled by infrared rays.

Installing batteries
Remove the cover on the back of the remote control, and insert 2 AAA batteries into the case, aligning them with the indications. Then, replace the cover.

When to replace batteries
If the distance required between the remote and the main unit decreases or if the main unit stops responding to the remote buttons, replace both batteries with new ones. Dispose of the used batteries according to the instructions on them or requirements set by your local municipality.

Remote control parts and functions

When the main unit and the remote control both have buttons with the same functions, this manual explains how to use one of the buttons. The other corresponding button can be used in the same manner.

• a. ON/STANDBY buttons
  Use these to turn the unit on or put it into standby mode.

• b. Input selection buttons
  Use these to select the playback source.

• c. INFO button
  Press this to show setting values, for example (page 24).

• d. UPCONVERT button
  Press this to change the upconversion setting.

• e. FILTER button
  Press this to change the DSD low-pass filter setting (page 26).

• f. OUTPUT button
  Press this to switch which connector outputs analog audio.

• g. MUTE button
  Press this to minimize the volume.

• h. DIMMER button
  Press this to adjust the brightness of the main unit’s display.

• i. DISPLAY button

• j. MENU button

  • Press this to enter setting mode (page 21).
  • Press this when in setting mode to return to the previous screen.

• k. Up/down (k/j) buttons
  Use these to select setting items.

• l. ENTER button
  Press this to confirm the selected item.

• m. VOLUME (+/−) buttons
  Use these to adjust the volume.

Display

When on

After the display appears as above, it will show the input source status.

Playback source screen

• The playback source screen will appear after turning the unit on as well as after about seven seconds pass without operation when a setting screen is open.
• The input signal format or volume is shown to the right of the playback source. Press the DISPLAY button on the remote control to change what is shown.

Display examples
Playback source information screens

Stopped

Playing back
The display appearance will differ according to the DISPLAY TYPE setting (page 23).

When set to VOLUME

When set to SAMPLING FREQ.

When the input source is LINE RCA/XLR

When line pass through (LINE PASS THRU) is enabled

Playback source name

• The name of the selected source is shown.
• The names on the display correspond to the selected connectors as follows.

The names in parentheses appear when switching.

• USB R (USB REAR)
  USB port on the back of the unit (USB)

• USB F (USB FRONT)
  USB port on the front of the unit ( )

• COAX (COAXIAL)
  RCA COAXIAL digital audio input connector

• OPT (OPTICAL)
  OPTICAL digital audio input connector

• Bluetooth (Bluetooth)
  Bluetooth device

• LINE RCA (LINE RCA)
  RCA analog audio input connectors

• LINE XLR (LINE XLR)
  XLR analog audio input connectors

Showing settings
Press the INFO button on the remote control to show the current setting. Each time the INFO button is pressed, the information shown changes.

Volume display

• Two types of volume can be shown: STEP and dB.
• This is set by the VOLUME TYPE setting (page 22).
• The volume setting shown will be enlarged when you turn this unit’s VOLUME knob.
• When USB volume control (USB VOLUME CTL) (page 23) is set to ON, the volume level from the computer can be adjusted, but the values of the volume shown by the computer and the volume shown by this unit will not match.

VOLUME TYPE set to “STEP (0-100)”

Display example

The maximum volume level is 100 and the minimum level is 0. Before connecting the headphones, set the VOLUME knob to its minimum value (0). Failure to do so might cause sudden loud noises, which could damage headphones, harm hearing or result in other trouble.

VOLUME TYPE set to “dB”
Display example

• The maximum volume level is +24 dB and the minimum level is −∞ dB (negative infinity). Before connecting headphones, set the VOLUME knob to its minimum value (−∞ dB). Failure to do so might cause sudden loud noises, which could damage headphones, harm hearing or result in other trouble.

The set output level is shown when the LINE OUT LEVEL is set to “FIXED 0dB” or “FIXED +6dB”.

For example when VOLUME TYPE is set to “dB”

• If VOLUME TYPE is set to “STEP (0-100)”, “VOL. 86” will be shown when set to “FIXED 0dB” and “VOL. 90” will be shown when set to “FIXED +6dB”.

When LINE OUT LEVEL is set to “OFF”, “VOL. 0” or “−∞ dB” will be shown.

For example when VOLUME TYPE is set to “dB”

When LINE OUT LEVEL is set to FIXED or OFF
Turning the VOLUME knob will cause the following to be displayed.

LINE OUT LEVEL set to FIXED

LINE OUT LEVEL set to OFF

Status indication
When the STATUS indication is ON (page 23), the left-right balance, headphone gain and headphone output settings will be shown at the top of the display.

• Left-right balance
  Nothing will be shown when the setting value is “ctr. 0.0dB”.

• Headphone gain
  This is shown when the analog audio output is headphones.

• Headphone output
  “A.G” will be shown when the analog audio output is headphones and the setting value is ACTIVE GROUND.

Basic operation

1. Shift the STANDBY/ON switch to its ON position to turn the unit on.

   • If a stereo amplifier is connected to this unit, always turn the amplifier on very last.
   • The input source status will be shown.

2. Minimize the volume.
   Minimize the volume on devices used to control the volume (this unit, the stereo amplifier or other equipment connected to this unit).

3. Press the OUTPUT button to select the connector type used to output analog audio. NOTE

   • Press this once to show the current output.
   • Press this again to change the output (page 12).

4. Turn the INPUT knob to select the input source.
   The selected source appears on the display.

   • You can also use the input selection buttons on the remote control.
   • If a signal input to a digital input connector is not a digital audio signal or is an audio signal format that is not supported by this unit, such as Dolby Digital or DTS, no audio will be output. Set the digital output of the connected device to PCM audio output.
   • To play back audio files when this unit is set to USB, you must first install a dedicated driver on the computer before connecting them (page 27).
   • DSD data can only be played back when the input source is USB or when using DoP format digital input.

5. 5 Operate the audio output device.
   Refer to the operation manual of that device.

6. Adjust the volume.
   When using the line outputs

   • When LINE OUT LEVEL is set to VARIABLE, turn this unit’s VOLUME knob to adjust the volume.

   • When LINE OUT LEVEL is set to any other setting, the volume cannot be adjusted from this unit. Use the stereo amplifier or other device connected to this unit to adjust the volume.
     When headphones are connected to this unit
     Turn this unit’s VOLUME knob to adjust the volume.

   • When this unit’s VOLUME knob is enabled, the volume setting will be shown.

NOTE

• The automatic power saving function is set to ON when shipped new from the factory (page 23).
• When DIMMER (display brightness) is set to AUTO OFF, the display will turn off when not being operated (page 22).

Bluetooth wireless technology

Bluetooth® notes

• When using this unit with a mobile phone or other Bluetooth devices, they should be no more than about 10 m (33 ft) apart. Depending on the circumstances of use, however, the effective transmission distance might be shorter.
• Wireless communication with every device that supports Bluetooth wireless technology is not guaranteed.
• To determine the compatibility between this unit and another device that supports Bluetooth wireless technology, refer to that device’s operation manual or contact the shop where you pur-chased it.

Profiles
This unit supports the following Bluetooth profiles.

• A2DP (Advanced Audio Distribution Profile)
• AVRCP (Audio/Video Remote Control Profile)
• To transfer audio using Bluetooth wireless transmission, the Bluetooth device must support A2DP.
• To control playback on the Bluetooth device, it must support AVRCP.
• Even if a Bluetooth device supports the same profiles, though, its functions might differ according to its specifications.

Codecs
This unit supports the following codecs. It will automatically select one of them during audio transfer.

• LDAC
• LHDC
• Qualcomm®aptX™ HD audio
• Qualcomm®aptX™ audio
• AAC
• SBC

The unit will select the appropriate codec to use according to the codec compatibility of the other Bluetooth device and communica-tion conditions.

LDAC is an audio coding technology developed by Sony that enables the transmission of High-Resolution (Hi-Res) Audio content, even over a Bluetooth connection. Unlike other Bluetooth-compatible coding technologies such as SBC, it operates without any down-conversion of the Hi-Res Audio content*, and allows approximately three times more data* than those other technologies to be transmitted over a Bluetooth wireless network with unprecedented sound quality, using efficient coding and optimized packetization. excluding DSD format contents ** in comparison with SBC (Subband Coding) when the bitrate of 990 kbps (96/48 kHz) or 909 kbps (88.2/44.1 kHz) is selected

NOTE

• You cannot select the codec to be used by pressing a button, for example.
• Due to the characteristics of Bluetooth wireless technology, compared to the playback on the Bluetooth device, audio output through this unit will be slightly delayed.

Content protection
This unit supports SCMS-T as a form of content protection when transmitting audio, so it can play protected audio.

Transmission security
This unit supports security functions during Bluetooth wireless transmission by the Bluetooth standard specifica-tions, but it does not guarantee the privacy of such transmissions. TEAC CORPORATION will bear no responsibility should an informa-tion leak occur during Bluetooth wireless transmission.

Pairing with another Bluetooth device
Pairing this unit with another Bluetooth device is necessary the first time it is used and when connecting to a different Bluetooth device for the first time.

1. Turn the INPUT knob to select Bluetooth.
2. Enable Bluetooth transmission on the other Bluetooth device.
3. Press and hold the INPUT knob to enter pairing mode.
   • Continue pressing even if “DEVICE SELECT!” appears.
   • “PAIRING…” blinks when pairing.
4. On the other Bluetooth device, select “UD- 507” (this unit).
5. After this unit enters pairing mode, pair with it from the other Bluetooth device.
   • For details, refer to the operation manual of that Bluetooth device.
   • After connection, the display will show the name of the connected device, followed by the input source.

Display example

Outputting audio from a Bluetooth device

• Pair this unit the first time you use it and when you want to connect it with a different Bluetooth device for the first time.
• When pairing or connecting with another Bluetooth device, they should be within a few meters of each other. If they are too far apart, pairing and connection afterwards might become impossible.

1. Enable Bluetooth transmission on the other Bluetooth device.

2. Turn the INPUT knob to select Bluetooth.
   This sets the source to Bluetooth.

   • You can also use the Bluetooth button on the remote control.
     Display example
     This unit will search for paired devices and automatically connect to one if found.
     ATTENTION

   • Depending on the Bluetooth device, you might also need to conduct connection operations on it.

   • If you are unable to connect it successfully, refer to the operation manual of the Bluetooth device.

3. Start audio output on the other Bluetooth device.

   • Confirm that the volume is turned up on the other Bluetooth device. If the volume of the audio being output is not turned up, no sound might be output from this unit.
     

Changing the connected device

1. Press the INPUT knob to show DEVICE SELECT.
   The bottom line of the display shows the name of the last connected device.
   Display example

2. Turn the INPUT knob to show already paired Bluetooth devices.

   • The unit can remember a maximum of eight device pairings.
   • If no paired device is available, the screen will appear as follows.
   • Press and hold the INPUT knob to enter pairing mode.
   • The first 16 characters of the device name are shown.
   • If characters other than English letters and numbers are included in the device name, it will not be shown properly.

3. Press the INPUT knob to connect.
   After connection, the display will show the input source.
   ATTENTION

   • If the input source is not shown, regardless of the connection standby status of this unit and the other Bluetooth device, restart both this unit and the other device and then connect them again.
   • Depending on the Bluetooth device, you might also need to conduct connection operations on it. If you are unable to connect it successfully, refer to the operation manual of the Bluetooth device.

4. Start audio output on the other Bluetooth device.

   • Confirm that the volume is turned up on the other Bluetooth device. If the volume of the audio being output is not turned up, no sound might be output from this unit.

NOTE
Press and hold the MENU button to clear all pairings with other Bluetooth devices.

Support for multipoint connection
Connecting with 2 Bluetooth devices at the same time is possible. Audio can only be output from one at a time when connected. Output from the device that most recently started playback will be prioritized. Playback will be stopped on the previously playing device.

Settings

1. Press the OUTPUT button to select an output connector to change its settings.
   When not changing an ANALOG setting item for which settings are saved individually for each output, selecting the output connector is unnecessary.

2. Press the MENU button to open the menu screen.

3. Turn the INPUT knob to show setting groups.

   • You can also use the up and down ( , ) buttons on the remote control.
     The setting groups change in the following order.

4. Press the INPUT knob.

   • You can also press the ENTER button on the remote control.
   • If you do not do anything for about ten seconds, the display will return to showing the input source status. In this state, press the MENU button to open a screen for the settings shown.

5. Turn the INPUT knob to select the setting item and press the INPUT knob.
   The setting items of each setting group are shown in the following order .

6. Separate settings are saved for each output.

7. This is shown when the analog audio output is PHONES XLR or PHONES 4.4mm.

  * The currently set value is shown on the display.
  * You can also use the up and down (k, j) buttons on the remote control.
  * Press the MENU button to return to setting group selection.

6. Turn the INPUT knob to change the setting value.
7. Press the INPUT knob.
   • You can also press the ENTER button on the remote control.
8. When you are done changing settings, press the MENU button twice to show the input source status again.
   • If you do not do anything for about ten seconds, the display will return to showing the input source status. In this state, press the MENU button to open a screen for the settings shown.

UNIT setting

Display brightness

• BRIGHT
  Stays lit brightly.

• Slightly BRIGHT
  Stays lit dimly.

• DARK
  Stays dark.

• AUTO-OFF
  Turns off automatically.

  • The display turns off when not being operated.

NOTE
This can be set directly with the remote control DIMMER button.

Volume display
This sets how the volume is shown.

• STEP (0-100)
  This shows the volume in steps from 0 (minimum) to 100 (maximum).

• dB
  This shows the volume in decibels (dB).

Screen indication
Select the information shown to the right of the playback source.

• VOLUME
  The volume is shown.

• SAMPLING FREQ.
  Information about the playback source is shown.

NOTE
This can be selected directly with the remote control DISPLAY button.

Status indication
Select whether setting values are shown at the top of the display.

• OFF
  Setting values will not be shown.

• ON
  The left-right balance, headphone gain and headphone output settings will be shown (page 16).

Automatic power saving function
This unit has an automatic power-saving function.

• The automatic power saving function is ON when the unit is shipped new from the factory.

• OFF
  The automatic power-saving function is disabled.

• ON
  The unit will automatically enter standby mode if no audio is output and no operation is conducted for about 30 minutes.

  • The automatic power-saving time setting can be used to change the amount of time until the unit enters standby mode.

Automatic power saving time setting
This sets the amount of time until the automatic power-saving function causes the unit to enter standby.

This can be set in a range from 1–255 minutes in 1-minute increments (30 minutes by default).

USB volume control
This allows the volume to be adjusted from the computer or other USB host device when the input source is USB.

• OFF
  Disable volume adjustment from computers and other devices.

• ON
  Enable volume adjustment from computers and other devices.

ATTENTION

• The volume level from the computer can be adjusted, but the values of the volume shown by the computer and the volume shown by this unit will not match.
• The volume settings of the computer or other USB host device and this unit will be synchronized. Adjusting the volume of this unit will also change the volume setting value of the USB host device accordingly.
• Some USB host devices do not support USB volume control.
• When connected by USB, the volume of the USB host device could be set and unintended loud sounds could be output. Confirm that the USB volume control is functioning before starting playback.

Restoring default settings
See “Restoring default settings” for operation procedures.

Information display
This shows the version of the firmware used by the unit.

• SYSTEM
  The microcomputer firmware version

• USB
  The USB firmware version

• FPGA
  The FPGA firmware version

• Bluetooth
  The Bluetooth module firmware version

ANALOG setting

XLR polarity
Use this to set the polarity of the XLR analog audio output (LINE OUT) connectors.

• PIN2 HOT
  Analog audio signals are output through the XLR connectors with 2: HOT polarity.

• PIN3 HOT
  Analog audio signals are output through the XLR connectors with 3: HOT polarity.

Line output level
Use this to set the audio level output from the analog audio output (LINE OUT) connectors.

• FIXED 0dB
  A maximum of 2 Vrms is output. Select this if you want to adjust the volume using an amplifier.

• FIXED +6dB
  A maximum of 4 Vrms is output. Select this if you want to adjust the volume using an amplifier.

  • If the sound distorts, set this to FIXED 0dB.

• VARIABLE
  This will enable adjustment of the analog output level using the VOLUME knob on the front of the unit. Select this if you want to adjust the volume using this unit.

• OFF
  No sound is ever output.

Left-right balance

• Use this to adjust the left-right balance.

• This setting can be made for each output.

• This can be set from Lch 24.0 dB to Rch 24.0 dB in 0.5dB increments.

• When the volume is the same for both left and right channels, “ctr. 0.0dB” will be shown.

Headphone output
This sets the headphone drive method.

• This is shown when the analog audio output is PHONES XLR or PHONES 4.4mm.
• BALANCED
  • Balanced headphones are operated with a differential drive.
  • The negative and positive connectors operate with opposite polarities.
• ACTIVE GROUND
  The amp drives so that the negative connector of balanced headphones is 0 V.

Headphone gain
Use this to switch the headphone output gain.

• HIGH
  High gain will be used.

• MIDDLE
  Medium gain will be used.

• LOW
  Low gain will be used.

Line pass-through
This sets the RCA or XLR input source to be output without changing the line input volume.

• OFF
  No through inputs are set.

• LINE RCA
  LINE XLR
  Signals are output without the volume being adjusted by the unit.

ATTENTION
If inputs connected to a fixed-output device are selected, signals that are too strong could be output to the speakers, resulting in damage to them. Moreover, this could cause loud noises to be output from the headphones, which might harm hearing.

NOTE
The speakers connected to a power amplifier connected to this unit can be shared as the front speakers of the AV amplifier if the pre-out connectors (for example, FRONT L/R) of the AV amplifier are connected to this unit’s RCA analog audio input connectors and LINE PASS THRU is set to LINE RCA. (The AV amplifier controls volume adjustment when the input source is set to “LINE RCA”.)

DSP setting

Upconversion
Use this to set the use of the upconversion circuit when receiving PCM signals.

• See page 11 for the relationships between input sampling frequencies and sampling frequencies after upconversion.

• OFF
  The input signal is sent as is to the D/A converter without being upconverted.

• 2× Fs
  If the input audio signal is less than 2× a standard sampling frequency, it is upconverted 2× and then sent to the D/A converter.

• 4× Fs
  If the input audio signal is less than 4× a standard sampling frequency, it is upconverted 4× and then sent to the D/A converter.

• 8× Fs
  If the input audio signal is less than 8× a standard sampling frequency, it is upconverted 8× and then sent to the D/A converter.

• NOTE
  This can be set directly with the remote control UPCONVERT button.

Clock sync
Clock sync is only possible when the input source is USB, COAXIAL, OPTICAL or Bluetooth. The setting items are CLOCK USB, CLOCK COAXIAL, CLOCK OPTICAL and CLOCK Bluetooth.

• OFF
  No clock sync is used.

• ON
  This unit’s master clock will be synchronized to the 10MHz clock input through the CLOCK sync input connector.

  • When the input source is COAXIAL, OPTICAL or Bluetooth, select this when both this unit and the digital audio output device are synchronized with the same external clock.

DAC configs
This sets the D/A conversion. Select the sound setting you prefer.

DELTA SIGMA Fs
This sets the ΔΣ modulator sampling frequency.

• 128× Fs
• 256× Fs
• 512× Fs

PCM DELTA SIGMA
This sets the ΔΣ modulator output format.

• MULTIBIT
  This outputs using multi level.

• DSD (1 BIT)
  This outputs using DSD format.

DSD low-pass filter

• OFF
  The low pass filter is disabled.

• FIR 1
  FIR low pass filter type 1

• FIR 2
  FIR low pass filter type 2

• FIR 3
  FIR low pass filter type 3

  • FIR 1, FIR 2 and FIR 3 settings are only effective during DSD input and/or when PCM DELTA SIGMA is set to DSD (1 BIT).

Playing back music on a computer

Supported operating systems

• This unit can be connected by USB and used with a computer running one of the following operating systems.
• Operation with other operating systems cannot be assured (as of May 2024).

When using Mac

• macOS High Sierra (10.13)
• macOS Mojave (10.14)
• macOS Catalina (10.15)
• macOS Big Sur (11)
• macOS Monterey (12)
• macOS Ventura (13)
• macOS Sonoma (14)

When using Windows

• Windows 10 (32/64-bit)
• Windows 11 (64-bit)

Installing the driver

When using Mac

• This unit can be operated with the standard OS driver, so there is no need to install a driver.
• A dedicated driver must be installed on the computer, however, to use Bulk Pet.

When using Windows
To use this unit for playback of files on a computer, install the dedicated driver on the computer.

IMPORTANT NOTICE

• You must install the dedicated driver software before connecting this unit to a computer using a USB cable.
• If you connect the unit to the computer by USB before installing the driver, it will not function properly.
• Depending on the composition of the computer hardware and software, operation might not be possible even with the above operating systems.

Installing the driver on a computer

• Install the dedicated driver on the computer after downloading it from the following URL.
• For details about installation and OS setting procedures, see the TEAC ASIO USB DRIVER Installation Guide included with the driver.

https://teac.jp/int/product/ud-507/download.

Note about transmission modes
This unit can transfer data using Isochronous or Bulk Pet mode. The sampling frequencies that can be transmitted are 44.1  kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, 352.8 kHz and 384 kHz. When properly connected, you will be able to select “TEAC USB AUDIO DEVICE” as the audio output for the operating system.

• Audio data sent from the computer will be processed using this unit’s clock during data transmission, enabling the reduction of jitter.

Downloading playback application TEAC HR Audio Player
You can download Mac and Windows versions of our free TEAC HR Audio Player application that supports playback of DSD files from the TEAC International Site.
https://teac.jp/int/product/hr_audio_player/download.

TEAC HR Audio Player setting note

• To play 22.5MHz DSD recordings with TEAC HR Audio Player, open the Configure window and set the “Decode mode” to “DSD Native.”
• To play formats other than 22.5MHz DSD, you can set this to either “DSD over PCM” or “DSD Native” as you like.
• For details, see “Selecting the DSD decode mode” in the TEAC HR Audio Player Owner’s Manual.

Playing back audio files from a computer

1. Use a USB cable to connect a computer to a USB port of this unit.

   • Use a commercially available cable with connectors that match the USB ports on this unit and the computer being used.
     Connecting to the USB Type-B Port (USB) on the back

2. Turn the computer on.

   • Confirm that the operating system has started properly.

3. Shift the STANDBY/ON switch to its ON position to turn the unit on.

4. Turn the INPUT knob to select USB.

   • When using the USB Type-B Port (USB) on the back, select “USB R” (USB REAR).
   • When using the USB Type-C port ( ) on the front, select “USB F” (USB FRONT).

5. Start playback of an audio file on the computer.

   • Minimize the stereo amplifier volume before beginning playback. Then, gradually increase it.
   • When using headphones connected to this unit, turn the VOLUME knob counterclockwise to minimize the volume before putting them on. Then, gradually increase it.

• If the USB volume control (page  23) is turned on, the volume control of the computer and this unit can be synchronized.
• Do not do any of the following when playing back audio files over the USB connection. Doing so could cause the computer to malfunction. Always quit the audio playback software before conducting any of these operations.
  • Unplugging the USB cable
  • Putting the unit on standby
  • Changing the current input selection
• Computer operation sounds will also be transmitted when playing back audio files over the USB connection. To avoid outputting these sounds, make the necessary settings on your computer.
• If you start the audio playback software before connecting this unit to the computer or before setting the input to Uthe SB, the audio files might not play back properly. If this occurs, restart the audio playback software or restart the computer.

Troubleshooting

If you experience a problem with the unit, please take a moment to review the following information before requesting service. If it still does not operate correctly, contact the retailer where you pur-chased the unit.

General

The unit does not turn on.

• Check that the power cord is completely plugged into the power outlet. If the outlet is switched, confirm that the switch is in the ON position.
• Connect a different electrical device to the outlet to confirm that it is supplying power.
• When the automatic power saving function has been activated, put the unit on standby, press the ON button on the remote control, or set the STANDBY/ON switch to STANDBY once and then back to ON.

Standby mode starts automatically.
The automatic power saving function is operating to put the unit on standby. Press the ON button on the remote control, or set the STANDBY/ON switch to STANDBY once and then back to ON. Change the automatic power-saving setting if necessary (page 23).

Remote control does not work.

• Turn the main unit on (page 17).
• If the batteries are exhausted, replace both of them with new ones (page 13).
• The remote control will not work if there is an obstruction between it and the main unit. Point the remote control at the front panel of the unit from a distance of less than about 5 m (16 ft) (page 13).

A television set or another device operates in error.
The use of this unit’s remote control might cause some televisions and other devices with wireless remote control functions to operate incorrectly.

There is a humming noise.
If a connecting cable is near a power cord, fluorescent light or similar cause of interference, increase the distance between them as much as possible.

No sound is output.

• If a stereo amplifier is connected to this unit, adjust its volume.
• If you are using headphones connected to this unit, use the VOLUME knob to adjust the volume.
• Use the INPUT knob to select the input that is connected to the source that you want to hear.
• Press the OUTPUT button to select the connectors that output analog audio.
• Reconfirm the connections with other equipment.
• When the LINE OUT LEVEL is set to OFF, nothing will be output from the analog audio output (LINE OUT) connectors (page 24).
• This unit can only play two-channel audio signals. For details about signal formats, see the input signal formats indicated in the specifications.

Volume cannot be adjusted.

• When the LINE OUT LEVEL is not set to VARIABLE, the volume cannot be adjusted for output from the analog audio output (LINE OUT) connectors (page 24).
• The input source (LINE RCA or LINE XLR) selected for LINE PASS THRU will be output without volume adjustment (page 25).

There is no sound from one side of the headphones.
Confirm that the headphones plug is inserted completely.

Clock sync

The CLOCK indicator does not stop blinking.

• Set clock synchronization to OFF when not using it.
• A clock signal to which the unit cannot synchronize might be being input. Check the connections of the clock sync connectors and the settings of the connected device.

Connections with a computer

The computer does not recognize this unit.

• See page 27 for information about supported operating systems. Operation with unsupported operating systems is not guaranteed.

Noise occurs.

• Starting other applications during playback of an audio file may interrupt playback or cause noise. Do not start other applications during playback.
• When the unit is connected to a computer via a USB hub, for example, noise might be heard. If this occurs, connect the unit directly to the computer.

Audio files cannot be played back.

• Connect this unit to the computer, and set this unit’s input to USB before starting audio playback software and audio file playback.
• If you connect this unit to the computer or set its input to USB after launching audio playback software, audio files might not play back properly.

The playback stopped working.
Check the audio output device setting of the operating system. Try deleting the driver and reinstalling it. For details, see the TEAC ASIO USB DRIVER Installation Guide included with the driver.

Bluetooth connection

Cannot show the device name.

• This unit does not support the display of symbols or double-byte characters, including Japanese and Chinese.
• Use only English letters and numbers for the names of
• Bluetooth devices are connected to this unit.

Sound is not output, or the volume is low.

• Confirm that the volume is turned up on the other Bluetooth device. If the volume of the audio being output is not turned up, no sound might be output from this unit.

Since this unit uses a microcontroller, external noise and other interference can cause the unit to malfunction. If this occurs, unplug the power cord, wait for a while, and then turn the unit on again and restart operations.

Restoring default settings

1. While pressing and holding the MENU button, set the STANDBY/ON switch to ON.
2. Release the MENU button when the FACTORY RESET menu appears.
3. Press the INPUT knob.
   Resetting begins when “PLEASE WAIT!” appears.

The playback source screen will appear after resetting completes.

Display example

ATTENTION

• Do not put the unit on standby until the playback source screen appears.
• This operation will restore all settings to their default values.
• The factory default settings are the setting values shown in the screen images used in the explanations in this manual.

Specifications

Analog audio outputs

• Connectors.
  • XLR connectors × 1 pair (L/R)
  • RCA connectors × 1 pair (L/R)
• Output impedance.
  • XLR: 220 Ω
  • RCA: 180 Ω
• Maximum output level (1 kHz/full-scale, into 10 kΩ)
  • FIXED 0dB. XLR/RCA: 2.0 Vrms
  • FIXED +6dB. XLR/RCA: 4.0 Vrms
  • VARIABLE. XLR:
  • 12 Vrms
  • RCA: 6 Vrms
• Frequency response*. 5 Hz – 80 kHz (+1 dB/−6 dB)
• S/N ratio*. 108 dB (A-Weight, 1 kHz)
• Distortion*. 0.002% (1 kHz, LPF: 20 Hz – 20 kHz)

Measurement conditions

• Input signal: 11.2MHz DSD
• Measurement output: RCA
• DSD low-pass filter: FIR 1

Headphone outputs

• Connectors. standard 6.3mm (1/4″) stereo jack × 1
  • 4-pin XLR connector × 1
  • 4.4mm 5-pole stereo jack × 1
• Maximum effective output
  • NBALANCED. 500 mW + 500 mW (into 32 Ω)
  • BALANCED. 700 mW + 700 mW (into 32 Ω)
  • Applicable load impedance. 16–600 Ω

Analog audio inputs

• Connectors.
  • XLR connectors × 1 pair (L/R)
  • RCA connectors × 1 pair (L/R)
• Input impedance
  • XLR: 50 kΩ
  • RCA: 25 kΩ
• Maximum input level
  • XLR: 5 Vrms
  • RCA: 2.5 Vrms

Digital audio inputs

• USB

  • USB Type-B port. 1 (USB2.0)
  • USB Type-C port. 1 (USB 2.0)

• Input signal formats

  • Linear PCM. 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz,
  • 192 kHz, 352.8 kHz, 384 kHz
  • 16-bit, 24-bit, 32-bit
  • DSD. 2.8 MHz, 5.6 MHz, 11.2 MHz, 22.5 MHz

• COAXIAL digital. 2

  • Input level. 0.5 Vpp

  • Input impedance. 75 Ω

  • Input signal formats

  • Linear PCM
    32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz 16-bit, 24-bit

  • DSD. 2.8 MHz (supported using 176.4kHz/24-bit DoP transmission)

• OPTICAL digital. 2

  • Input level. −24.0 dBm to −14.5 dBm peak

  • Input signal formats

  • Linear PCM
    32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz 16-bit, 24-bit

  • DSD. 2.8 M Hz (supported using 176.4kHz/24-bit DoP transmission)

Bluetooth function

• Bluetooth version. 4.2
• Output class. Class 2
• (transmission distance without obstructions**. 10 m)
• Supported profiles. A2DP, AVRCP
• Supported A2DP codecs. LDAC, LHDC, Qualcomm®aptX™ HD audio, Qualcomm® aptX™ audio, AAC, SBC
• Supported A2DP content protection. SCMS-T
• Maximum number of stored pairings. 8
• Maximum number of multipoint connections . 2
  • The transmission distance is approximate. The transmission distance could vary depending on the surrounding environment and electromagnetic waves.

Clock sync input

• Connector. BNC
• Input sampling frequency. 10 MHz
• Input impedance. 50 Ω
• Input level. rectangle wave: equivalent to TTL levels sine wave: 0.5 to 1.0 Vrms

External control

• Trigger output (12V TRIGGER OUT). 1 (3.5mm mono mini jack)
• Output level. 12 V
• Maximum current supply. 100 mA

General

• Power supply
  • Model for Europe. AC 220–230 V, 50/60 Hz
  • Model for U.S.A./Canada. AC 120 V, 60 Hz
• Power consumption. 18 W
• Standby power. 0.4 W (in standby mode)
• External dimensions (W × H × D, including protrusions) 290 × 85 × 249 mm (11 1/2″ × 3 3/8″ × 9 7/8″)
• Weight. 4.9 kg (10 7/8 lb)
• Operating temperature range. +5°C to +35°C
• Operating humidity range. 5% to 85% (no condensation)
• Storage temperature range. −20°C to +55°C

Included accessories

• Power cord × 1
• Remote control (RC-1341) × 1
• Batteries for remote control (AAA) × 2
• Foot pads × 3
• Owner’s manual (this document, including warranty) × 1
  • For information about the warranty, users living in the USA and Canada should see pages 40–41 and the back cover (warranty document). Users living in Europe and other regions should.
• Specifications and appearance are subject to change without notice.
• Weight and dimensions are approximate.
• Illustrations in this owner’s manual might differ slightly from production models.

WARRANTY

Warranty provisions (United States and Canada only)

Length of Warranty
The parts and labour warranty will be effective for one (1) year from the date of the original purchase for products not used for commercial purposes. For products used commercially, the warranty is ninety (90) days for magnetic heads and optical pickups, one (1) year for all other parts and ninety (90) days for labour.

Who Is Covered Under This Warranty

• This warranty is valid only in the United States or Canada, depending upon the country in which the original purchase was made, and enforceable only by the original purchaser within the country in which the purchase was made.
• This warranty is not valid if the product was purchased through an unauthorized dealer.

What Is Not Covered Under This Warranty

• Damage to or deterioration of the external cabinet.
• Damage resulting from accident, misuse, abuse, or neglect.
• Damage resulting from failure to follow instructions contained in the product owners’ manual or otherwise provided with the product.
• Damage occurring during shipment of the product (Claims must be presented to the carrier).
• Damage resulting from the repair or attempted repair by anyone other than TEAC or an authorized TEAC service station.
• Damage resulting from modification or attempted modification of product not authorized by TEAC.
• Damage resulting from causes other than product defects, including lack of technical skills, competence, or experience of the user.
• Damage to any unit that has been altered or which the serial number has been defaced, modified or removed.

What TEAC Will Pay For
TEAC will pay all labour and material expenses for items covered by the warranty. Payment of shipping charges is covered in the next section.

How To Obtain Warranty Service
Your unit must be serviced by an authorized TEAC service station within the country in which the product was purchased. If you are unable to locate an authorized service station in your area, please contact TEAC at the applicable address shown at the end of this warranty statement. PLEASE DO NOT RETURN YOUR UNIT TO TEAC WITHOUT OUR PRIOR AUTHORIZATION. You must pay shipping charges if it is necessary to ship the product for service. However, if the necessary repairs are covered by warranty, we will pay the return shipping charges to any destination within the country in which the product was purchased. Whenever warranty service is required, you must present the original dated sales receipt, or other proof indicating the purchase place and date, as proof of warranty coverage.

LIMITATION OF IMPLIED WARRANTIES
ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE LENGTH OF THIS WARRANTY.

EXCLUSION OF DAMAGES
TEAC’S LIABILITY FOR ANY DEFECTIVE PRODUCT IS LIMITED TO REPAIR OR REPLACEMENT OF THE PRODUCT, AT TEAC’S OPTION. TEAC SHALL NOT BE LIABLE FOR DAMAGE BASED UPON INCONVENIENCE, LOSS OF USE OF THE PRODUCT, INTERRUPTED OPERATION, COMMERCIAL LOSS OR LOST PROFITS, OR ANY OTHER DAMAGES, WHETHER INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR OTHERWISE. SOME STATES OR PROVINCES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS AND/OR DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC RIGHTS AND MAY VARY FROM SOME OF THE RIGHTS PROVIDED BY LAW. THESE RIGHTS MAY VARY FROM STATE TO STATE OR PROVINCE TO PROVINCE.

Europe
This product is subject to the legal warranty regulations of the country of purchase. In case of a defect or a problem, please contact the dealer where you bought the product.

In countries/regions other than the USA, Canada and Europe

• This warranty gives you specific legal rights, and you may also have other rights that vary by country, state or province.
• If you have a warranty claim or request, please contact the dealer where you bought the product.

TEAC CORPORATION

• 1-47 Ochiai, Tama-shi, Tokyo 206-8530, Japan
• https://teac.jp/int/.

This product has a serial number located on the rear panel. Please write it here and retain this for your records.

• Model name: UD-507
• Serial number:

References

• TEAC | International Website
• TEAC HR Audio Player | DOWNLOADS | TEAC | International Website
• TEAC | International Website
• TEAC SUPPORT

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