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  1. Markus Kersius

    Mach 1 Overdrive mods?

    I have both original pedals, LS & SL and degooped them both. The SL is literally build on the LS pcb. Differences are: LS: a100 vol, a10k tone, a500k gain pots, 5 1n914 diodes and a opa2134 ic SL: a 250k vol, a10k tone, a1meg gain, 5 1n914 plus 2 extra Bat41's diodes in the loop and a tl072...
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