No. of Channels
Two-Channel
Amp Type
Tube
Inputs
Four inputs (two per channel)
Outputs
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- 25W, 1-12 in. speaker, guitar combo, six-tube chassis, 1962-63 preamp: 3 X 6EU7, 1 X 12AU7, power: 2 X 7591, rectifier: GZ34, 1964-67 preamp: 3 X 6EU7, 1 X 6C4, power: 2 X 7591, rectifier: GZ34, two channels, tremolo, top/front silver control panel, four inputs (two per channel), six knobs (Ch. 1 v, Ch. 2 v, tone, tremolo depth, tremolo freq., power), Indian Brown covering, Spanish Crush brown grille with Gibson logo in upper right-hand corner, leather handle, 26 in. wide, 20 in. tall, 10.5 in. deep, 987 shipped, mfg. 1962-67.
This is the same model as the GA-40T Les Paul, but Gibson changed the name of it when they stopped using the Les Paul brand on their products (see the Gibson Les Paul Guitar). Shipping totals reflect the total number shipped from the start of 1962 (regardless if GA-40T Les Paul models were still shipped into 1962). Although this amp was shipped through 1967, it doesn't appear that it adopted the style between 1965 and 1967 that featured black covering, a silver grille, and front white control panel.
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- approx. 15W, 1-15 in. speaker (early models) or 2-10 in. speakers (later models), guitar combo, eight-tube chassis, preamp: 4 X 6EU7, 1 X 12AU7, power: 2 X 6V6, rectifier: 5Y3, two channels, tremolo, reverb, top front control panel, four...
- 15W, 1-12 in. Jensen P12R and 1-8 in. speakers, guitar combo, six-tube chassis, preamp: 1 X 6SJ7, 2 X 6J5, power: 2 X 6V6GT, rectifier: 5Y3, single channel, bottom rear-mounted control panel, four inputs (three inst., one mic), two knobs...
- 25W, 1-12 in. Jensen speaker, guitar combo, seven-tube chassis, preamp: 3 X 6EU7, 1 X 12AU7, power: 2 X 7591, rectifier: 5AR4, two channels, tremolo, top silver control panel, four inputs (two per channel), five black and silver knobs (Ch...
- similar to the GA-50, except has a tremolo circuit with an eight-tube chassis, preamp: 3 X 6SJ7, 1 X 6SN7, 1 X 6SL7, power: 2 X 6L6, rectifier: 5V4, and six knobs (Ch. 1 v, Ch. 2 v, b, t, s, i), 1,717 shipped, mfg. 1948-1955.
- 14W (1955-57) or 16W (1958-1960), 1-12 in. Jensen speaker, guitar/microphone combo, seven-tube chassis, preamp: 2 X 5879, 1 X 7025, 1 X 6SQ7, power: 2 X 6V6, rectifier: 5Y3, two channels, tremolo, top rear-mounted control panel, four inpu...
- 35W, 1-12 in. speaker, guitar combo, eight-tube chassis, preamp: 2 X 6EU7, 12AX7, 2 X 12AU7, power: 2 X 7591, rectifer: 0A2, two channels, tremolo, reverb, front white control panel, four inputs (two per channel), 10 knobs (Ch.1: v, t, b,...
- similar to the GA-30 Invader, except has a reverb circuit with a seven-tube chassis, preamp: 3 X 6EU7, 1 X 12AU7, power: 2 X 6V6 power, rectifier: 5Y3, top mounted silver control panel, four inputs (two per channel), four black and silver...
- 25W, 1-12 in. and 1-10 in. speakers, guitar combo, nine-tube chassis, preamp: 4 X 6EU7, 2 X 12AU7, power: 2 X 7591, rectifier: 0A2/5AR4, two channels, top silver control panel, four inputs (two per channel), eight black and silver knobs (...
