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The circuit of the E945 is very simple
with a single op-amp taking care of the buffing and boosting duties,
while the loop is post-buffer/booster. The pedal works really well and
the amount of ultra-clean boost is quite staggering with an internal
symmetrical supply of +/-12 volts. This E945 is ideal with a twin
channel Blackface/Silverface amp or with a two amp setup giving a pseudo
4 channel rig with one simple pedal.