A75 Class A MOSFET Power Amplifier Front End Board (PCB only, no parts)

Front end for an all MOSFET, pure Class A stereo audio power amplifier. Designed by Nelson Pass and Norman Thagard. 75 Watts per channel. All through hole, easy to assemble PCB. One board holds the front end for two channels. The board closely follows the published design. Bare board only. Parts are not included and need to be obtained separately. Assembly is required. The output stage (originally, 12 pairs of IRF230+IRF9231 power MOSFETs per channel; today, six pairs of IRFP240+IRFP9240 per channel offer a similar performance) needs to be assembled off board. References: The original article by Nelson Pass and Norman Thagard: Part 1 and Part 2.