M2X with JFETs power supply If you're at all concerned

If you're at all concerned about the input impedance of the output devices at HF

These 4 parts are all compatible with each other and can be used interchangeably to create 4 different styles of class A amplifier:

This Softstart project is employed to limit these destructive inrush currents by momentarily introducing a resistance between the power transformer’s primary winding and the mains supply

It takes a lot of force to snap the board - enough so you won't ever snap it accidentally but not so much that you will have a hard time snapping it

and various other parts fitted

M2X with JFETs power supply If you're at all concernedThe M2x is based upon the Nelson Pass First Watt M2 Amplifier. However, the first "buffer" stage of amplification has been placed on a removable daughter board, making it extremely easy to swap in different first stage circuits. A total of five first stage circuit designs are provided, and naturally one of them is the Nelson Pass First Watt original. Read the M2X thread on diyAudio to learn more and join in the discussion. The M2x is a Push Pull Class