AMPEG JS-20 FOUNTAIN OF SOUND
- similar to the JS-35, except the preamp tubes were changed to 6SJ7s and an OC3 voltage regulator was added, mfg. 1957-58.
No. of Channels
--
Amp Type
Tube
Inputs
Three inputs
Outputs
--
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- similar to the JS-20 Fountain of Sound, except has 30W output, mfg. 1957-58.
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- similar to the JS-35, except the preamp tubes were changed to 6SJ7s and an OC3 voltage regulator was added, mfg. 1957-58.
- 20W or 30W, 15 in. JBL speaker, tube chassis, preamp: 3 X 6SJ7, power: 2 X 6L6/5881, silver control panel, five black knobs, three inputs, navy blue covering, gray grille, sat on four legs, upward pointing speaker, mfg. 1955-1960.