How its done, is you can use Channel II as a high gain stage, it then becomes a single channel amp. But you can plug in either pre or post the high gain stage.
This was the premise for the Marshall 2203 and 2204 amps that came along in 1976 (I think it was).
I have a 1974 1959 which I turned into a 2203, I fiddled around with gain vs treble boost to get the right sound...then I copied my treble boost settings into my 1983 Marshall 2203, Job done!!
I love my amps, I have had them both since 1984.....
I also changed them to run KT88 tubes.
Many times I have tried other amps, boutique hand made things of all sorts of origins....and nothing gives me the same pleasure as these amps...
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