Yet more important notes
specific to this circuit
CHANNEL ORDER
Our version of this circuit runs left channel (A) into right channel (B).
Why? Because that’s how it should be. If you don’t like it you’re welcome to
wire up the daughterboard differently, wiring IA and OA to IB and OB, and vice
versa. You should also flip the daughterboard and put the switches on the
other side. You’ll have to use long wires for the jack connections, but that’s
the price of putting it together differently to how it was designed.
HIGH GAIN VERSION
We can only go off the info that is out there in space. As far as we know, no-
one has identified the IC used in the new high-gain channel. Other
components have been identified and are (using Channel A BOM as ref):
R5
100K
C1
22n*
D5-6
1N1418 or 1N914
We cannot confirm these changes, so it’s up to you whether you want to
implement them. Without the specific IC used it’s unlikely to sound the
same as the original.
*The input cap is supposedly 22n on the input of both channels in the
high-gain version.