We are shipping domestic and international orders! Delivery may take longer than usual due to widespread flight cancellations.
We are shipping domestic and international orders! Delivery may take longer than usual due to widespread flight cancellations.
Cart 0
A40 power amplifier PCB, top
A40 power amplifier PCB, bottom
A40 Class A Audio Power Amplifier Boards (pair)
hifiocean

A40 Class A Audio Power Amplifier Boards (pair)

Regular price $9.95 $0.00
Shipping calculated at checkout.
  • Class A audio power amplifier.
  • Designed by Nelson Pass and enjoys steady following despite being around for 40 years.
  • 40 Watts per channel.
  • Low part count, all through hole, easy to assemble.
  • One board per channel; two boards are required for a stereo amplifier.
  • The board closely follows the published design except it allows using Q11 with any pinout, making part substitution easier.
  • The output stage (4x power Darlinton transistors and 4x 0.68ohm emitter resistors) needs to be assembled off board.
References:

More from this collection