Aiyima DAC-A3 6.35MM Headphone Amplifier DAC Decoder User Manual

Aiyima DAC-A3 6.35MM Headphone Amplifier DAC Decoder

Product Information

The 6.35MM Headphone Amplifier DAC Decoder is a product manufactured by Shenzhen Yima Technology Co.,Ltd. It is a compact device with dimensions of 101mmx98mmx33mm. The model number of this product is DAC-A3.

The front panel of the device includes the following components:

1. PC-USB input jack
2. Optical input jack
3. Coaxial input jack
4. Right channel output jack
5. Left channel output jack
6. Power input jack (DCV=12V I1A)

The front panel also features various indicators for signal status, input channels, line output, and headphone output. It includes a volume knob and two keys for power control and switching between headset output and line output.

The device supports USB, Optical, and Coaxial RCA inputs. It is compatible with Windows 7/8/8.1/10/11 and Mac OS X operating systems. The supported resolution and sampling rates vary depending on the input type. The device has a high signal-to-noise ratio (SNR) and low total harmonic distortion plus noise (THD+N). The headphone output has a maximum power of 830mW.

The main chipset used in this device includes ES9038Q2Mx2, TPA6120A2, SA9227, and LM4562.

Product Usage Instructions

1. Connect the PC-USB, Optical, or Coaxial input source to the corresponding input jack on the front panel.
2. Ensure that the power input jack is connected to a DC power supply with a voltage of 12V and a current of at least 1A.
3. Turn on the device by pressing and holding the 1# key. The signal status indicator will turn red to indicate power on.
4. Use the 1# key to select the desired input channel (PC-USB, Optical, or Coaxial). The corresponding input channel indicator will light up.
5. If using headphones, connect them to the headphone output jack on the front panel. If using a line output, connect the desired device to the line output jack.
6. Adjust the volume using the volume knob.
7. To switch between headset output and line output, press the 2# key.

Please refer to the user manual for further information or contact customer service for any inquiries or issues.

Front Panel Description

1. Signal status indicator – Red: power on； Green: lock
2. Coaxial input channel indicator
3. Optical input channel indicator
4. PC-USB input channel indicator
5. Line output indicator
6. Headphone output indicator
7. Headphone output jack
8. 1# key, long press on/off, short press to select input channels
9. 2# key, Short press to switch between headset output and line output
10. Volume knob

Rear panel introduction

1. PC-USB input jack
2. Optical input jack
3. Coaxial input jack
4. Right channel output jack
5. Left channel output jack
6. Power input jack（DC：V=12V，I≥1A ）

Specification

Dimensions| 101mmx98mmx33mm|
---|---|---

Inputs

|

USB

| OS : Windows7/8 / 8.1 /10/11, Mac OS X
Resolution/Sampling rate:PCM16/24bit,

44.1/48/88.2/96/192kHz;DSD64/128/256

Optical/Coaxial| Resolution/Sampling rate：

16/24bit,44.1/48/88.2/96/176.4/192kHz

Outputs

| RCA| SNR:110dB，THD+N:0.002%，

Output level：3.5VRMS（MAX）

Headphone(unbalance)| SNR:108dB 830mw@32Ω，139mW@300Ω
Frequency response| RCA| ±1dB，20-20kHz
Headphone(unbalance)| ±1dB，20-20kHz
Main chipset| ES9038Q2Mx2，TPA6120A2，SA9227,LM4562

Package Contents

• DAC-A3 body
• USB cable (USB A to B Type）
• Headset adapter 6.35-3.5
• User’s Guide

*Please consult customer service for Win7/Win8/DSD driver package

Tips

• Install this unit in a well-ventilated cool, dry, clean place away from direct sunlight, heat sources, vibration, dust moisture, or cold.
• On the top of this unit,do NOT place:
  • Other components, as they may cause damage or discoloration on the surface of this unit.
  • Combustible(i.e. candles), as they may cause fire damage to this unit,or personal injury.
  • Containers with liquid in them, as they may fall and the liquid may cause electrical shock to the user or damage to this unit.
• Do not cover this unit with a newspaper, tablecloth, curtain etc. in order not to obstruct heat radiation.If the temperature inside this unit rises, it may cause fire, damage to this unit,or personal injury.
• 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, on personal injury. AIYIMA will not be held responsible for any damage resulting from the use of this unit with a voltage other than that specified.
• When not planning to use this unit for long periods of time(i.e. going on vacation), disconnect the power cable from the AC wall outlet.
• For added protection for this product during a lightning storm,or when it is left unattended and unused for long periods of time, unplug it from the wall outlet. This will prevent damage to the product due to lightning and power-line surges.

Product Question

• Q: 1. Amplifier board has current sound and noise？
  A: Most of our amplifier boards use a DC power supply. The board itself does not produce current sound and noise.
  The main causes of current acoustic noise are:

  • A. The power supply filter used is not good;the current sound is caused by wrong input by the power or audio input.
  • B. The input signal quality is poor; the output of the device connected to the input is improper and the noise is caused by the abnormal input of the audio source.
  • C. The input cable is of poor quality:the line is in poor connection;the wiring is damaged the wiring is suspended
  • D. The input connection has other playback devices,and some devices share the power supply to cause noise

• Q: 2. No sound output no sound in 1 channel？
  A: A.The speaker is broken. or the speaker cable is not connect well.
  The input cable is not in good connection;the wiring is damaged; the output of the device connected to the input is improper

• Q: 3. Volume broken and breaking sound when turn loud?

  • A. The power input is insufficient the wiring is correct firstand the supply current is sufficient,
  • B. The speaker itself has poor performance or damage and the speaker power is toc small or too large.
  • C. left and right channel speakers(+)(-) output are independent can not be connected to each other

• Q: 4. Speaker broken sound when subwoofer amplifier volume turns loud?

  • A: A.The nower innut is insufficient. first confirm the wirinn is correct. the sunnly current is enough
  • B.Whether the power of the speaker itself is too large or too smallor the bass performance of the speak itself is poor: the structure of the speaker box these abnormalities will cause breaks

• Q: 5. The volume power is not enough?
  A: Power and power supply voltage. the amplitude of the sound source sianal the size of the speaker impedance are all related kind of deficiency will affect the power

• Q: 6. Will the amplifier be burnt?

  • A. The positive and negative poles of the power supply are connected reversely; the power supply voltage is too high, exceeding the limit operating voltage of the board
  • B. If the board requires a DC power supply, it is not allowed to connect directly the AC transformer power supply (this can be rectified and converted to DC power before it can be used)
  • C. To confirm that the wiring is correct,then connect with the power supply. The wrong line connected or the short circuit both will cause damage to key parts!

References

• AIYIMA | AMPLIFIER & DECODER AUDIO
• VK.com | VK

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