There are many ways to create classic clean and rock sounds. This time we utilised a very unorthodox approach.
Channel one could be described as a "plexi on steroids". It has plenty of gain thanks to a 5879 pentode used for the input section. A six-position tone switch is actually a high-pass filter so that the right amount of bass and lo-mids can be set in order to get thick, yet articulate distortion. At least, but not last, there is no bass-middle-treble equalization: since all eq's of this kind are naturally V-shaped (i.e. mid-cutting), omitting the eq results in much more mids and presence, making it a perfect lead sound.
Channel two uses an archytypal "twiny" topology with its shimmering treble and an essential tube-driven spring reverb.
And then there is probably the most interesting feature, the channel mixing: both preamp channels can be mixed together at a any desired ratio, effectively creating a third channel. This way you can dial e.g. a rhythm sound, mixing rich harmonics of the lead channel with tight, undistorted bass of the clean chanel.
Channel 1: Volume (w/ a push-pull Gain-boost), Tone, Master
Channel 2: Volume (w/ a push-pull Gain-boost), Treble, Middle, Bass, Reverb
Spring Reverb - tube-driven, vintage style circuit
Half power mode disconnects a pair of 6V6's
Preamp: 1x 5879 pentode, 4x ECC83 (12AX7)
Reverb: 1x 12AT7, 1/2 12AX7
Poweramp: 1x ECC83 (12AX7), 1x GZ34 rectifier, 4x 6V6 / 40W, cathode biased
Dimensions (W/H/D): 620 x 250 x 260 mm