S M S L SU-X DAC Dual Decoder User Manual

S M S L SU-X DAC Dual Decoder

Product Information

Specifications

• Model: MQAMQA-CD
• Chipset: XMOS XU-316
• PCM: 32bit/768kHz
• DSD: DSD512
• DAC: ESS DACES9039MSPRO
• MQA Support: Yes
• Total Harmonic Distortion (THD): 0.00005% (-126dB)
• 2nd PLL: 21
• SPDIF Jitter: CK-03
• DOP Support: Yes
• USB Interface: Yes
• AES/EBU Interface: Yes
• DSD Interface: Yes
• LDAC Support: Yes (24bit/96kHz)
• AptX HD Support: Yes (24bit/48kHz)
• AptX Support: Yes (16bit/44.1kHz)
• SBC Support: Yes (16bit/44.1kHz)
• AAC Support: Yes (16bit/44.1kHz)

Product Usage Instructions

Connection
To use the product, follow the steps below:

1. Connect the product to your computer using the USB cable.
2. If using an external audio device, connect it to the product using the appropriate interface (AES/EBU, SPDIF, etc.).
3. Ensure that the product is powered on and connected to a power source.

Software Compatibility
The product is compatible with the following operating systems:

• Windows 7 / 8 / 8.1 / 10 / 11
• Mac OSX 10.6
• Linux

Supported Formats
The product supports the following formats:

• PCM: 44.1kHz – 768kHz (32bit)
• DSD: 2.8224MHz – 22.5792MHz (1bit)
• MQA Decoder: USB / AES
• MQA-CD Decoder: AES

Wireless Audio Support
The product supports the following wireless audio technologies:

• LDAC: 24bit/96kHz (990kbps/660kbps/330kbps)
• AptX HD: 24bit/48kHz (576kbps)
• AptX: 16bit/44.1kHz (352kbps)
• SBC: 16bit/44.1kHz (328kbps)
• AAC: 16bit/44.1kHz (320kbps)

FAQ

• Q: What is the maximum sample rate supported by the product?
  A: The product supports a maximum sample rate of 768kHz for PCM and 22.5792MHz for DSD.

• Q: Can I connect the product to my Mac computer?
  A: Yes, the product is compatible with Mac OSX 10.6 and newer.

• Q: Does the product support MQA decoding?
  A: Yes, the product supports MQA decoding via USB and AES interfaces.

The contents of this manual may be changed with the edition, and are subject to change without notice.

Safety Notes

• Install this unit in a well-ventilated, cool, dry, clean place away from direct sunlight, heat sources, vibration, dust, moisture, or cold.
• Use the voltage specified on this unit Only. Using this unit with a higher voltage than specified is dangerous and may cause fire, damage to this unit, or personal injury. Our company will not be held responsible for any damage resulting from the use of this unit with a voltage other than that specified.
• Do not attempt to modify or fix this unit by yourself. Contact a salesperson or customer service when any service is needed. The cabinet should never be opened for any reason.
• When not planning to use this unit for long periods (i.e. when going on vacation), disconnect the power cable from the AC wall outlet.

Important note:
The product specifications and information mentioned in this manual are for reference only. The content of this manual is subject to change without notice.

Warranty Terms

1. The Term of Service
   Foshan Shuangmusanlin Technology Co., Ltd promises to offer good-quality products. If the product is broken within 7 days after purchasing when you use it normally, you can choose to send it back for return, replacement or repair (only the product does not affect the second sale can be returned ). Repairing for free in one year if you use it normally.

2. The date of purchase is the date on the invoice or receipt used by the seller, and if you buy it online, you can show the screenshot of the trade.

3. If inappropriate usage causes the unit damaged, the warranty will be void. As below.

   • All damages by inappropriate use, including using it under a non-normal working environment or without following the instructions.
   • Dismantling, refitting, and repairing by users in private.
   • Causing damage by using some fittings instead of the designative or accredited ones.
   • Cannot provide credible proof of purchase.

4. Sending it back to our company for repairing.

5. Contact your S.M.S.L Audio reseller for a return or replacement.

Features

• Support MQA decoding and MQA-CD;
• The brand-new third-generation XMOS XU-316, PCM supports to 32bit/768kHz, and DSD supports to DSD512;
• Two groups of linear power supplies are used to supply power to digital and analog units respectively. With multiple low-noise regulated power supplies, provide a stable, reliable, efficient, and low-noise power supply system for SU-X.
• Using dual latest flagship DAC chip ES9039MSPRO from American ESS, built-in MQA decoding;
• Using an eight-channel parallel circuit design, the distortion is as low as 0.00005%(-126dB), ensuring more stability.
• Use 21 high-end dual op-amps and a large number of HiFi components;
• Adopting 2nd PLL to eliminate SPDIF transmission JITTER;
• Brand-new self-developed CK-03 clock processing circuit greatly reduces clock jitter;
• Support DOP independent display, clearly see the current decoding format;
• USB, optical, coaxial, AES, and I2S support DSD, while coaxial, optical, and AES support DOP64.
• Use tempered glass to fully fit the color IPS display screen;
• Built-in low-noise power supply processing, improved power efficiency, and lower power consumption;
• Multiple low-noise regulated power supplies ensure a stable, reliable, efficient, and low-noise power supply system.
• Qualcomm’s high-end Bluetooth chip, supports LDAC(24bit/96kHz), APTX/HD, SBC, AAC;
• High-quality all-aluminum shell;
• High-quality gold-plated input and output terminals;
• Japan Audio Association (JAS)Hi-Res certification;
• Equipped with remote control and full-function remote control.

Specifications

• Input ……………………………………………….. USB / Optical / Coaxial / Bluetooth / I2S / AES
• Output …………………………………………………………………………………………………….. RCA / XLR
• Line output amplitude…………………………………………………………………….XLR 5.2Vrms R CA 2 .5Vrms
• THD+N ……………………………………………………………………. 0.00005%(-126dB)(UN-WTD)
• Dynamic range …………………………………………………………………..135dB(XLR),128dB(RCA)
• SNR ……………………………………………………………………………………..135dB(XLR),128dB(RCA)
• USB transmission……………………………………………………………..USB 2.0 asynchronization
• USB compatibility ………………………………………Windows 7 / 8 / 8.1 / 10(Needs Driver) M ac OSX10.6 or Later、Linux(Driverless)
• MQA decoder …………………………………………………………… USB / Optical / Coaxial / AES
• MQA-CD decoder ………………………………………………………………. Optical / Coaxial / AES
• Sampling rate and bit Width:
  • USB PCM 44.1 ~ 768kHz(32bit)
  • DSD 2.8224 ~ 22.5792MHz(1bit)
  • Optical / Coaxial 44.1 ~ 192kHz(24bit)
  • DoP DoP256(USB),DoP64(Optical / Coaxial / AES)

Bluetooth:

• LDAC ……………………………………………………. 24bit/96kHz (990kbps/660kbps/330kbps)
• aptX-HD ……………………………………………………………………………….24bit/48 kHz_576kbps
• aptX ……………………………………………………………………………………..16bit/44.1 kHz_352kbps
• SBC ……………………………………………………………………………………..16bit/44.1 kHz_328kbps
• AAC …………………………………………………………………………………….16bit/44.1 kHz_320kbps
• Power Consumption ……………………………………………………………………………………….<20W
• Standby power ……………………………………………………………………………………………. <0.5W
• Size ………………………………………………………………………………….250x51x217mm (WxHxD)
• Weight …………………………………………………………………………………………………2.7kg/5.95lbs

SMSL reserves the right to make improvements that may result in specification or feature changes without notice.

Remote control

• If the remote control is still ineffective when it is close to the machine, replace it with a new battery.
• If the user does not use the remote control for a long time, remove the battery of the remote control.
• Dispose of used batteries in accordance with local regulations on battery disposal.

Operating the remote control

Note
This remote controller use 2 x R03/AAA batteries.

Display Interface and Instructions

1. Knob
2. Remote window
3. Standby LED
4. Display
5. XLR Output
6. AC IN
7. USB-B Input
8. USB-C Input
9. Optical Input
10. Coaxial Input
11. I²S Input
12. Bluetooth antenna
13. AES/EBU Input
14. RCA Output

Knob

• Konb: Volume +/-, menu switching, function selection.
• Button: Short press to enter the menu and confirm;
  long press to exit the menu and switch the machine on and off.

Bluetooth operating instructions

• Connection:
  Switch the input source to Bluetooth, turn on the Bluetooth function of the phone, search for “SMSL SU-X”, click Pair Connection after searching, and when the phone shows “Connected”, the connection is successful.

• Re-connection:
  During the use of Bluetooth, if the connection is lost, eg: going out, and then coming back, some phones will not automatically reconnect, at this time, a short press of the Bluetooth button on the remote control can reconnect.

• Clear pairing:
  Press and hold the Bluetooth Control button on the remote control. After clearing the pairing, some phones may no longer be able to search for “SMSL SU-X”, in which case you need to delete the Bluetooth device “SMSL SU-X” saved by the phone and then search for pairing.

Instructions

INPUTS

• USB TYPE B
• USB TYPE C
• BLUETOOTH
• OPTICAL
• COAXIAL
• AES/EBU
• I2S(HDMI)

OUTPUTS

• ALL LINE OUT
• BALANCED
• UNBALANCED

PCM FILTER

• FILTER OFF
• MINIMUM PHASE
• APODIZING
• LINEAR FAST
• LINEAR SLOW
• MINIMUM FAST
• MINIMUM SLOW
• LOW DISPERSION

DSD FILTER

• 47kHz Cutoff
• 50kHz Cutoff
• 60kHz Cutoff
• 70kHz Cutoff

PRE MODE
PRE MODE is the volume adjustment function switch for the output.

• VARIABLE: The output volume is controlled.
• FIXED: The output connector volume is fixed.

SOUND COLOR
There are 9 sound color settings in SU-X.

• Rich1, Rich2, Rich3
• Tube1, Tube2, Tube3
• Crystal1, Crystal2, Crystal3

This setting is the DSP of DAC, to make some different sound colors, all of these settings will not change the frequency response curve. When set to “Standard”, this setting will be bypassed.

FN KEY FOR

• OUTPUTS
• BLUETOOTH

DPLL

MIN ~ MAX
(A total of 15 kinds, the default is 7 kinds. The larger the number is, the stronger the range to adapt to jitter, and the smaller the number, the better the performance against clock jitter.) This DPLL setting is a special function of ESS series products. It can adjust the internal DPLL digital phase locked loop circuit Bandwidth so that the chip achieves a balance between anti-clock jitter and input tolerance.

Its function:

• When the clock stability of the input signal is good, this value can be reduced, so that the clock performance of the system is better;
• When the clock stability of the input signal is not good, the sound may be interrupted. Increasing this value can avoid sound interruption! Especially when using TV as a signal source!

I2S MODE

• NORMAL
• REVERSED

Note:
This option is used to match different I2S interface standards, please check the interface definition of the signal source before use.

DIMMER

5 second ~ 60 second
(The range is 5 seconds to 60 seconds. After setting, the screen will automatically go off within this time, and the screen will re-light up if you operate the remote control or the knob at any time.)

BRIGHTNESS

• 1% ~ 99%

RESET

• During Bluetooth input, long press the middle button of the knob, the system will only reset the Bluetooth pairing status;
• During other inputs, long pressing the middle button of the knob, the system will clear all settings, including Bluetooth.

About MQA

MQA (Master Quality Authenticated) 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. The SU-X includes MQA technology, which enables you to playback MQA audio files and streams, delivering the sound of the original master recording. Visit How it works https://www.mqa.co.uk/how-it-works for more information.

How to play MQA

• SU-X supports MQA decoding with USB, optical fiber, and coaxial!
• SU-X’s MQA playback does not require the use of special playback software, such as foobar2000, Audirvanaplus only needs to support ASIO or WASAPI audio output, and when playing MQA audio, it is best to adjust the volume of the computer to the maximum, so that the audio output of the computer is in the best condition.
• When playing an MQA file, the sampling rate of the original master recording is displayed.

MQA and the Sound Wave Device are registered trademarks of MQA Limited.© 2016

Notes on playing MQA-CD

• Please make sure that what is being played is a genuine MQA-CD.
• Verify that the optical or coaxial signal output of the CD player is an unprocessed source code.

References

• MQA Explained | How MQA Audio Technology Works | MQA
• MQA Explained | How MQA Audio Technology Works | MQA

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