Donald "Duck" Dunn (Crosby Stills Nash & Young, Stax recording legend)
"I always used B-15's in the studio on Stax Records. But it was Ampeg's 8x10's more than anything with my flat wound strings that drew me to Ampeg."
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RMS Power Output: 20W, Fixed bias, Class AB
Speaker: 1 x 12" alnico
Preamp Tubes: Tubes (3 x 12AX7)
Power Amp Tubes: Tubes (2 x 6V6)
Rectifier: Tube (5AR4)
Controls: Volume, Tone
Footswitch: Tremolo On/Off
Output: Dual ¼" jacks
Dimensions (W x H x D inches): 20 x 17.5 x 9.75
Weight: 25 Pounds
Leave it to the tone-obsessed engineering staff at Ampeg to come up with the no-compromise, 20-watt, all-tube, point-to-point wired J-20 combo. Part of the Diamond Blue Lead Series, the J-20 Jet's retro-styling is highly evocative of the '60s in attitude, as well as tone.
J-20's preamp section boasts not one, but three 12AX7 tubes, and its dual 6V6 output stage operates in fixed-biased mode. The end-result of all this "inner tubing" is a guitar combo with controllable vintage "crunch" along with Ampeg's hallmark ease-of-operation. The simple Volume/Tone control setup makes it easy to quickly dial in just the right amount of edge for personal bliss.
With its point-to-point wiring, 5AR4 rectifier tube, 12" alnico speaker, and foot-switchable, bias-vary tremolo circuitry, the Ampeg J-20 is a no-compromise guitar combo ideal for even the most tone-obsessed guitarist.
» Read the review in Guitar Buyer, July 2008 (PDF, 402KB)