FX-Audio PH-A3 TUBE-05 HiFi Vacuum 12AU7 Tube Headphone amp Bass Treble EQ Preamp User Manual

FX-Audio PH-A3 TUBE-05 HiFi Vacuum 12AU7 Tube Headphone amp Bass Treble

EQ Preamp

Product Features

1. TUBE-OS uses high specification tube 12AU7, with strong tube sound warm and soft voice sound, fu II human voice.
2. Using the high-end chip NJM1194 of Japan JRC, the left and right channels have high balance and low distortion. With treble and bass adjustment function, enthusiasts can adjust EQ according to persona I preference.
3. Customized high-performance transformer can effectively anti-interference and reduce bottom noise. The high-performance transistor performs IV conversion on the tube to ensure power output and without distortion.
4. It uses high-precision & low-temperature VISHAY (American Vishay) resistance in the analog signal circulation circuit,lt is selected from the enthusiast WI MA ( German Weimar) & NICHICON (Japan Nichicon) for the coupling capacitor to make the enthusiast more H IFI.

Thank you for purchasing our product. Please carefully read this manual before using the product.

Front Panel

1. Display Screen
2. Remote control receiving
3. Function knob
4. Function button
5. 3.5mm Headphone output
6. 6.35mm Headphone output

DANGER

High voltage circuit inside, Please do not disassemble it without authorization.

Back Panel

1. Line input
2. Line output
3. DC:12V 2A

Precautions

1. Please read the product manual before use.
2. This product uses DC l2V2A power adapter (Please contact customer service if you need to replace it}.
3. Do not replace other types of tube without authorization.
4. The machine will heal up when in working, please keep the air circulation.
5. If there is no sound when starting up, check whether the tube has poor contact or the signal input and output are connected reversely.

Remote Control Instruction

Remote Control Instruction
The effective distance of the remote is Bm.
Please keep the same level with the front of the machine.

DISPLAY CONTENT

Operation

1. Function button: Short press to enter the menu and confirm the contents of menu.
2. Function button: Long press to switch and return to the previous step.
3. The function knob: For volume adjustment at the bottom of main interface, also up & down selection.
4. It will automatically return to the main interface after lO seconds of no operation.

Note : When the volume is 90, Line Out RMS Level z 2 Vrms; When the volume is 99, Line Out RMS Level z 3.5 Vrms.

Primary menu

It has 6 sub-menus, the content is shown in the figure

Secondary menu

1. lnput the submenu
2. lnput the submenu
3. Treble adjustment menu
4. Bass adjustment menu
5. Brightness adjustment menu
6. Display the sleep su bmenu

Note:

• Line output: It is only used as an adjustable preamplifier, and is invalid to insert headset.
• Headset output priority: The volume is from the headphone if the head phones are plugged in.

The volume is from the line when there is no earphone plugged in.

6.35m m & 3.5mm earphones cannot be output at the same time, and the earphones for priority output.

FXAUDIO DIGITAL TECHNOLOGY

• ADD : 205, building e, Zhongzhi Creative Park, Tangqian
• village, Guan Ian Zhangge community, Longhua
• New District, Shenzhen
• TEL: 0755-21015679
• E-mail: sales@szfxaudio.com
• Website: www.szfxaudio.com

Common Questions

Common Problem

1. Check the power supply if the product is abnormally turned on
2. Whether the signal light is on normally
3. Whether the plugs on both sides are inserted in place
4. Whether the plug-in power has been activated
5. The product plays music abnormally, poor sound quality/unbalanced mono/unbalanced dual-channel
6. Replace the sound source and lest the music
7. Replace the signal cable and teat again
8. Pay attention to whether the pins of the tube are inserted in place, and whether pins are crooked
9. Equipment matching can also lead to poor sound quality
10. Music is intermittent
11. Replace the power supply
12. Check whether the speaker impedance is too low or the volume is too loud lo cause overload protection
13. Check whether the format of the music file, the code rate, and the sampling rate exceeds the supported range

Connection Guide

headphone amplifier connection

• Can connect 3.5mm headphone.
• Can connect 6.35mm headphone.

Note : If you use 3.5mm headphone, you need to use 6.35mm to 3.5mm adapter.

Passive speaker connection

Connection Guide

Active speaker connection

Wires for Connection

TUBE-OS TECHNICAL SPECS

WARRANTY CARD

• Store Name
• Buyer ID
• Order
• Purchase Date
• Buyer Name
• Contact Number
• Contact Address

Service Selection:

Repai
Return

• This paga is the basic cartificate of warranty
• Please fill in it carefully and keep it properly. Thi! certificate is valid only with company seal

WARRANTY TERMS

1. Term of Service
   FXAudio Oigital Technology Co., Ltd. promises the good quality of the products
   If the products fail in normal use within 7 days from purchase date, the customers can choose to return the products or guarantee them {they can only return the products without effecting the secondery seles), end guerantee them free of cherge within one yeerof normal use.

2. The purchase date is subject to the purchase invoice or receipt issued by the seller, and online shopping can be subject to the transaction screenshot.

3. Three guarantees are not supported In the following situations:

4. All damage caused by human factors, including use in abnormal working environment or use not in accordence with the instructions, or not follow the description requirements.

5. Damage caused by natural factors (such as lightning damage, etc.)

6. The user disassembles, modifies, and repairs  the machine privately

7. Damage caused by the use of non-designated or non-epproved eccessories

8. QC or warranty label on the fuselage is torn

9. User cannot present a valid purchase certificate

10. Products thet do not belong to our company (such as fakes)

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