Fargen Micro Plex Guitar Amplifier head 5W single ended output power. The Fargen Micro Plex is a handwired single ended tube guitar amplifier has dual power tube sockets for use with any octal power tube without re-biasing! It is able to use with EL34/KT66 /KT77/6550/6L6/5881/6V6 power tubes. The Master pot is a push/pull type to use two different gain stages. The Volume push/pull switches between two different gain, the pull out position makes as like a booster. The factory tubes are 1x12AX7 and 1x6V6. The matching cabinet is able to buy separately.