Producer and musician Stephen O Malley famouse for his work with groups Sunn O))), Ginnungagap, KTL, and Æthenor has orders us design and production of foot guitar preamp.
It will be a hybrid pedal in a compact box size 187mm x 120mm x 38mm with two channels: tube and "stone". The base of the tube channel is scheme of the preamp Sunn Model-T (1973) on two 12ax7EH tubes.
The "stone" section will have preamp from Sunn beta bass amplifier.Our pedal will have two outputs, one of which will have constant signal from tube preamp, the other one will have one of 4 possible variants depending on commutation.
All commutation works with the help of three footswitches. "Tube" and "beta" switches on corresponding channel. When both switches are on, the signal passes through channels sequentially and switche "revers" gives direction of the signal ("tube" after "beta" or vice versa).Each channel has classical guitar set of regulators (gain, bass, mid, treble, level) and master volume.