Hi, I have posted a similar question on a stomp-box forum, but thought I'd ask here also. I have a Boss OD-2 ('turbo' OD) - MIJ. The non footswithchable older model. I really like it. Quite different to most other Boss OD's I was able to usefully mod it easily by putting a SPDT to toggle the C35 cap between stock (.18uF) and a .22uF Works a treat for a little bit more low-end if required, and no vol loss nor change of tonal characteristic when engaged I got the idea from an ancient post I found by Brian Wampler from back in his IndyGuitarist days Happy with my mod, I then also managed to snag a OD-2R - MIT , the later one with the remote switch. It is louder (good!) but aside from that it sounds very, very similar. However the circuit is apparently completely different I'd really hoped I could do the same , simple 'one cap' mod to the OD-2R Ok I'm waffling: My request is - does anyone have any good info on lowering the low-pass / bass cut on an OD-2R MIT please? or Could anyone with a good eye tell me which cap is the OD-2 'C35' equivalent on an OD-2R maybe? I tried, but that is beyond my skills! Schematics for both - attached. On the OD-2 MIJ schematic 'C35' is the .18uF up there in the top right Any help much appreciated! edit: sorry - those attached schematics dont seem to enlarge too well as attachments here. I can try uploading them somewhere maybe.