AMPEG J-12A Jet
- similar to the J-12 Jet, except has 7591A power tubes, mfg. 1964 only.
No. of Channels
Single-Channel
Amp Type
Tube
Inputs
Two inputs
Outputs
--
- similar to the J-12 Jet, except has 7591A power tubes, mfg. 1964 only.
- similar to the J-12A, except has 2 X 6BK11 preamp tubes, mfg. 1965 only.
- similar to the J-12T Jet, except has a solid-state rectifier instead of a 5Y3GT, mfg. 1965-66.
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- 12W, 1-12 in. speaker, five tube chassis, preamp: 2 X 6SN7, power: 2 X 6V6GT, rectifier: 5Y3, one channel, tremolo top black control panel, two inputs, three black knobs (v, tone, tremolo), power switch, available in cream or yellow bookbinding covering with red or watermelon colored grilles (1957-mid-1958), Navy Random Flair with a gray grille with white swirls (mid-1958-1962), or Blue Check with a gray grille (1962-63, 1967-1970) mfg. 1958-1963, 1967-1970.
In 1958, the Jet changed to the Navy Random Flair covering like all Ampeg amps at that time. In 1962, the Blue Check covering was introduced. There were a few models made in 1959 and 1960 with the Tin logos.
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- 12W, 1-12 in. speaker, guitar combo, four-tube chassis: preamp: 2 X 12AX7, power: 2 X 7591A, solid-state rectifier, single channel, tremolo, front control panel, two inputs, five black knobs (v, t, b, s, i), available in Blue Check coveri...
- 15W, 1-12 in. speaker, guitar or accordion combo, seven tube chassis, preamp 2 X 6SL7, 2 X 6SN7, power: 2 X 6V6GT, rectifier: 5Y3, single channel, tremolo, echo dimension (reverb), top black control panel, three inputs (guitar, accordion,...
- 18W, 1-12 in. speaker, guitar combo, five-tube chassis, preamp: 1 X 12AX7, 1 X 6U10, 1 X 7199, power: 2 X 7591A, solid-state rectifier, single channel, reverb, tremolo, front chrome control panel, two inputs, six black knobs (v, t, b, r,...
- similar to the J-12 Jet (Second Version) except has reverb with an additional 6U10 preamp tube and a reverb control, mfg. 1968-1970.
- similar to the M-12 Mercury except has an updated chassis, mfg. 1964-65.
- similar to the R-12R Reverberocket, except has a revised chassis with either 7591A or 7868 power tubes, mfg. 1965 only.
- similar to the R-12 Rocket, except has an updated chassis, mfg. 1964-65.
- 20W (early models) or 25W (later models), 1-15 in. Jensen speaker, guitar combo, six tube chassis, preamp: 3 X 6SL7, power: 2 X 6L6 outputs, rectifier: 5U4, two channels, top control channel, six inputs (three for instruments, three for a...