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I have to agree with this. One of the reasons I missed the Vref at the pots instead of ground. Really put the diodes to feedback or ground after C14 and then all the pots to ground. Then loose C8/C9 and go wiper out. Though not a fan of using 100K wiper to an output as that can have an effect...

Thanks, I missed that! Gordon

C14 blocks the DC from the volume control.

Actually the AC ground is the same and remember the opamp output is already centered at Vref.

Those look like 1N914 to me. Mixed reviews with those that have both the POT and MXR.

But why would you want to put the diodes to Vref? That puts dc across the volume control. You could do the same thing and ground then before the blocking cap and make it a hard clipper. Ok will open mine and see put it on the bench. Thanks, Gordon

Quick question as I think the schematics are wrong on the switch to the diode array. Why would the position go to Vref which is 1/2 of the input voltage? That would mean the volume control has DC across it. Why isn't that just going to ground? The opamp is already cap coupled at that point. Just...