> Ha!
> Do you think it would be suicidal to have the 2 types of
> capacitors (10 & 470, for each of the six) under the control of a switch
> I'm getting excited, now...

That's possible but it will be difficult to find a sitch with 6 layers. The
wires should be short as possible to avoid additional hum noise. Maybe
shielded cables are necessary. One has to try it out.

Best wishes
Dieter Doepfer