-volume potis (from mute to normal and overdrive)
-glitch mods
-pitch oscillator mod

I used J2 for ground and IC 10 pin 14 for 4.5 V source for the oscillator. Pitch tesistor is 10k log reverse. cap was below 100nF.

The HKA mod is also very interesting, put it already to the TR707

Mods: 350€ + parts (knobs+housing) + postage (No VAT (small business §19 (1) UStG))

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Documentation:

www.jacobkorn.de
2014