Does anyone out there have access to an M-11-A schematic? The M-11 one is readily available all over the internet, but the A version which has the Tremolo section, is just not out there. I'm doing a restoration for a customer of this classic amp. All I have to go on is a gutted chassis; the circuit board is completely missing. I've already looked at a number of classic Trem circuits that could be used in this amp, but would really like to keep it as original as possible. It looks as if the valve used is a single 12AU7, and the control panel only has a single pot labeled 'SPEED'; Depth would be a nice addition, but again, not original...

Thanks