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Rear Panel

1. Ground  Screw:

  It  is  used  to  reduce  background  noise  &  hum  when  using 

multiple outlets to power audio equipment. 

2. DC Power Input:

 It is used to connect the power adapter to the AMP4. The 

AMP4 is using DC 12V power supply.

3. Output 1:

 It is used to plug in the headphone to the output channel 1. The 

volume of Output 1 is controlled by the knob of Vol 1 on front panel.

4. Output 2:

 It is used to plug in the headphone to the output channel 2. The 

volume of Output 2 is controlled by the knob of Vol 2 on front panel.

5. Output 3:

 It is used to plug in the headphone to the output channel 3. The 

volume of Output 3 is controlled by the knob of Vol 3 on front panel. 

6. Output 4:

 It is used to plug in the headphone to the output channel 4. The 

volume of Output 4 is controlled by the knob of Vol 4 on front panel.  

7. Stereo  Input:

  It  is  used  to  connect  audio  devices  to  the  AMP4  as  input 

sources by 1/4" TRS connectors. The input source will be distributed to all 
the 4 output channels. 

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Specifications

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Input Impedance:

 100K Ohm(Unbalanced)

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Max. Input Level:

 +14 dBV

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Input Connectors:

 Stereo 1/4" TRS phone jack, L & R Mono 1/4" TS jacks

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Output Impedance:

 51 Ohm each output

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Frequency Response:

 20 Hz - 20K Hz

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Max. Gain:

 20 dB

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S/N Ratio:

 > 90 dB

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THD:

 < 0.08%

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IMD(SMPTE):

 <0.08%

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Power:

 DC 12V

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