I am sure John East is getting custom pots made for his preamps (I have talked with him about it) and it is a nice feature. The Flexcore uses more or less commercially available pots. As for a one-off sort of thing, I can't say he hasn't done it so best would probably be to email directly. I've heard he's quite responsive (or ask him here on TB).I saw that option. I know John East does a stacked volume/tone with a push/pull active/passive switch built into the volume knob, I was just hoping someone here had talked to Mike and he had done it as a one-off or something.

