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Classic 1969 Class A Power Amplifier

Classic 1969 Class A Power Amplifier 2-Channel Assembled Board

Regular price $55.99 Sale price $107.99 Unit price per
Tax included. Shipping calculated at checkout.

Product Description :

two-layer gold-plated PCB
ONsemi  0281 and TIP41C, SM1015 transistor
Size: Length 8.5cmx7.5cmx Height 30mm



Supply voltage: DC AC 20V-24V-28V-45V, can push 4-8 inches and 140W below speakers.

Output power: 10W-13W.



Adjustable quiescent current between 0.3-1.8A, Recommend 1.2-1.5-1.8A
radiator is recommended to be 0.8-1.2-1.5-1.8 kg or more

Adjust the midpoint by yourself Static current method:

Adjust the midpoint: Turn the universal meter to the voltage level, connect the black meter to the negative red meter, and then connect the positive terminal of the output capacitor on the circuit board. Adjust the adjustable resistor on the board to make it be the supply voltage. For example, the power supply voltage is 24V - the midpoint voltage. It is 12V.

Adjust the current: universal table hit 10A file, a test pen is connected to the power supply is positive, and the other terminal on the probe is positive, adjust the board adjustable resistance M202 to change the current size.


Package include
  • 2Pcs/1Set board
  • s-l1600 (1)s-l1600 (2)s-l1600

Maximum Power Per Channel: NO POWER
Package: Yes
Brand Name: Nobsound
Type: Home Amplifier


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