glip22":3rn7dzn1 said:
Interesting. My Aldrich has a big round low end(not compressed at all) and can be very open. I don't sense any compression from diodes. It is gooped so I cannot see if there are any diodes in the circuit. Its not an early mod but it may be a variation as it was done to be closer to Mark's original bitch used by Norum, and Doug. It does have a load of gain. I only keep my gains at 6 or lower depending on the three way switches settings.
Yours probably doesn't have the clip circuit. If the amp has a switch that drops the volume when engaged, then it has the clip circuit

some also had it on a dial instead of a toggle switch.