Cool Mike :)
I think the clipping difference is very subtle, but it would be easy to put them on a switch. Maybe put a couple of leds on one side and the stock diodes on one side for more of a difference.
I listened to it again the other day, and thought is sounded just a tad thin compared to what I remembered, so if I'm building it again I would probably play around with larger values for C1 and C3, so I suggest socketing those and experiment :)
Good luck
cheers / Freppo
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