• PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
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  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W
  • PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W

PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W

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PASS A3 Single-ended Class A Power Amplifier Kit / Amplifier Board 30W+30W




“Amplifier PCB”: This link is for one bare PCB. not include any Components.

“amplifier kit" : This is a kit. include 2 channel PCB + All components. need yourself to solder them.

"amplifier board" : This is one pair assembeld and tested board.


(Tube amp Style) PASS A3 Single-Ended Class A Power Amplifier Kit. Free debugging. if Welding is correct. connect power Will can works.

 
Reference to  Famous PASS A3 circuit . All the FET are equipped same with the origianl machine, the input differentialTransistors  using the new US FU9210, the power Transistors using the new origianl N-channel IRFP250, FET after precision matching,


Sound style: Sweet and mellow, music taste very good, transparent.sound will be better than most of General amplifier.

PCB Size: 122MMX74MM

Operating voltage: Recommended DC: + - 25V 

( The Transformer voltage recommned AC20V-0-AC20V. transformer power above 200VA)

Power: 30watts @ 8ohms; 60watts @ 4 ohms

Distortion rate @ 1 KHz: 1% at rated output;

                         0.003% @ 5 watts into 8 ohms

Input impedance: 36kohm balanced, 18kohm single-ended

Output noise: <300uV unweighted 20-20kHz

Dynamic range: 140dB

Gain: 26 dB

Signal input support: balanced input or unbalanced input

 

Note: single-ended  class A has huge heat! A heat sink must be installed before power on. Otherwise it may burn board. Recommended each board radiator greater than 2kg.




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