M2X

The 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 A amplifier circuit, with zero global feedback. It consists of 3 stages: an input buffer circuit (on a daughter card), followed by a passive auto-transformer for voltage gain, and finally a Class A MOSFET push pull output buffer. The sound of the M2x, as Nelson Pass puts it, is "relaxed and lively."Five different input stage options are provided on PCB daughter cards: ISHIKAWA: The Nelson Pass original using Toshiba JFETs MOUNTAIN VIEW: A single ended Class A circuit using a Fairchild JFET TUCSON: An IC opamp circuit using a highl