I should have a two knob high gain version built shortly, I believe the mod to turn it into high gain is going to pave the way to that oscillation, if you'd like a little more control.... it is a parasitic oscillation, so it's not really a dialed in or tuned thing. Oscillation on the unit in the video completely vanishes once the knob is turned below that 1-2 o'clock point, and there's little volume gain past it, so it's basically wide open at noon and goes apeshit beyond. Time will tell if that's recreatable.
Here's a quick run down of some pros and cons between the variants:
High gain mod is executed by modifying the trailing buffer section into a PNP gain section, this is past the second volume control, so these are inherently much noisier at idle (standard builds are pretty quiet in terms of floor noise unless you dime the controls). The high gain version doesn't really do the full sound as well as the normal gain version.
Normal gain builds retain the buffer section, which is routed to the inner of the two output jacks - because the active buffer is part of the circuit, it is BYPASSED when the pedal is (true) bypassed, so that output jack is turned off in bypassed mode. I have decided to NOT engineer a work around on this pedal to hold at the price point. That section turning off does allow reverb trails, etc - if you can work with the volume change.
There is a lot of actual voltage gain on tap with any configuration, tonally speaking, things start happening when the circuit is chewing on actual signal - a byproduct of that is gobs of volume. I'm open to requests based on turning it down (on a per build basis, not across the family), though at that point I don't know if I'm bringing anything to the table that is not already covered by others.
It's not a transparent circuit, so it does take something and give something else back. If you're worried about retaining your fragile harmonics you're probably in the wrong place.
