FACTOIDS & TRIVIA
Ampeg's stereo amplifiers were made from 1960 to 1964, and were primarily marketed to jazz guitarists and accordionists. Introduced in 1962, the Super Echo Twin pumps out 30 watts of warm, clean power in mono mode. In stereo, the player has command of two 15 watt channels. The slight time delay that accompanies the deep-as-the-ocean speaker driven reverb accentuates the stereo separation since the dry signal is run through one channel while the reverb signal is sent to the second channel. Ampeg engineers also added a tremolo circuit that sounds similar to vibrato by means of a time/phase shift. The amp shown here is model ET-2-B. The ET-2 and ET-2-B are identical except for rectification (tube vs. solid state) and sound similar. The Super Echo Twin is remarkably versatile and sounds equally good with a guitar equipped with single coil or humbucking pickups. Its sonic potential stretches from blues to jazz making the ET-2 one of the finest guitar amps ever to come out of Ampeg's Linden factory. The Jensen EM1201 speakers, though non-original, appear to be the equivalent of the stock speakers for this amp (Jensen C12Q's). It is thought that the EM series were used by the factory as replacements and, therefore, one can speculate that these may indeed still be factory speakers.
AMPEG SUPER ECHO TWIN ET-2-B (April 1964)
Power Amp: Tube; 4 x 7591A (2 per channel), 15 watts RMS @ 8 ohms per side
Preamp: Tube; 4 x 6SL7 (2 per channel)
Rectifier: Solid state, 1 rectifier per channel
Speakers: 2 x 12" Jensen EM12-01 (non-original)
Channels: 2 (true stereo); 2 inputs per channel (Guitar, Accordion), one stereo jack
Effects: Vibrato, reverb
Controls: Bass, treble, volume; tremolo intensity and depth, reverb intensity, foot switch for tremolo and reverb
Dimensions: 181/2 H x 27 W x 121/2 D inches
Weight:
46 lb