THD ELECTRONICS BIVALVE 30 HEAD (BIV30) Description
- 30W, head-unit only, class A four tube chassis, preamp: 2 X 12AX7 (or optional 12AT7, 12AU7, 12AY7, 12AZ7), power: 2 X 6L6 (or optional EL34, 6550, KT66, KT77, KT88, KT90), single channel, front chrome control panel, five knobs (v, t, b, attitude, hot plate attenuator), full power switch, high v/low v switch, standby switch, power switch, available in a black metal cage head unit, black or a colored (blue, gold, purple, or red) rack-mount unit, or traditional head-unit available in black, cream or paisley covering (new 2010), current mfg.