J-20's preamp section boasts three 12AX7 tubes, and its dual 6V6 output stage operates in fixed-biased mode, all the tubes combining for controllable vintage crunch. The combo also has has point-to-point wiring, 5AR4 rectifier tube, 12" alnico speaker, and foot-switchable, bias-vary tremolo circuitry. A simple Volume/Tone control setup makes it easy to quickly dial in your sound.
Ampeg say that the J-20 is a no-compromise guitar combo ideal for even the most tone-obsessed guitarist.
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