
As requested please find attached my handwritten schematics. The tonestacks and the phase inverter should be accurate.. Everything else is just an approximation as my readings may have been incorrect due to resistors in parallel to those I have measured. As mentioned this amp is the most complex that I have ever seen. Unfortunately I could not take a reading of how many gain stages each channel uses but it is probably safe to assume that channel 2 uses 2 gain stages before the tone stack, channel 3 has 3 or 4 gain stages and channel 4 has 4 gain stages. You could get close to the sound of ch 3 or ch 4 by taking an SLO clone and adjusting the tone stacks and phase inverter. 


