Here we have a Hammond tube amp from 1962 that has been gutted and turned into a super rare 1954-55 Gibson GA20 circuit. This was the first GA20 with 12AX7 tubes made in 1954-55 with the oatmeal looking covering. The circuit was changed by 1956. Very sweet, full sound! Plug and play ready! 12 watt range. Mic and Instrument channel are both accessible through input. 8 ohm output. Speaker out jack on back. Original bottom plate, brand new top cage. Tweed style fuse, rubber feet, 3 prong power cord, pilot light and power switch added. All vintage tube lineup- blackplate 12AY7, 12AX7, 2 6V6GTs and EZ81/6CA4. The 6V6s are perfectly matched in circuit. Money must be received within 3 days. Video is as follows-1st part is Mic channel halfway up, 2nd is Mic channel cranked, 3rd is Instrument channel halfway up, 4th is Instrument channel cranked, 5th is both channels cranked.