Two tastes that taste great together.
 Or three.
 ...7 knob wonder...TS, and SD-1 with switched and potted super feedbacker Mod !!!
 I got this into the box with little room to spare...Very twiddley...has been somewhat stableized [Looks Ok] by the boxing, the SD-1 had to have it's guts ripped out there for a time when I was finding the DMM's dead battery, a 'dead 10k resistor [what funn !!] that was already in cct[that's what I get for trusting my eyes instead of the meter, which can't always be trusted].
 Alll in all a very difficult construction, pretty cool sounding...I need to do some big amp tests with the waterfall issue...for some reason the boxxing with the TS has caused a little hydro-electric plant noise to occur.
 I'm useing two 386's for + power, 1/2 V, and Gnd.
 Would a large electrolytic across from + to - power make any difference?
 It 'was a new TL072 that went into the SD-1, after all that tribulating it could be that's it's no longer quite so new.
 Hafta say the feedback mod is certainly worth the SPST and a stretch of wire...pin1 to pin 7, but I added a 100k pot in there so it can be adjusted..very fine knob adjusts make coarse adjustment to gain and high end content.

Are you saying you want a ts9 and an sd1 in 1 box w/ a feedbacker mode?

Spent three days [basicaly] building this one...well that and fixing the DMM, and finding that pesky in cct 10k marked wire.
 Then thinkin it was 'funky' and trying to get that out of it when it was actually not in it...was in the amp...
 Three nasties in one build...it took a few swings, but I smashed those curve balls out of the park !!!
 It was like having a measuring stick made from rubber band, and like having two boards each  measuring 3 ft long, side by side one being also 6 inches longer...rediculous ...
 The Tenk resistor that wasn't was like having a water valve that doesn't impede flow !!! Go Figure...and I did figure on that 10k...only took about half a day to stumble on it...fortunately I touched by accident the feedbacker [I think Ansil was typing about this] Mod...so I put that in there with some extra tweeks [a switch and a 100k pot] on it.