Alright. Either A-->B-->C-->Out or A-->C-->B-->Out where as A=Circuit bent DOD Grunge pedal that acts as either a through and through effect or a signal generator, B=Circuit bent DOD Flanger that has also been modded with the internal trim pots mounted for access, and C=Circuit bent Boss Overdrive/Distortion pedal. The DOD Grunge has been nicely mangled with 7 toggle switch, 2 push button and 1 knob w/toggle bends. The Flanger and Overdrive each have 4 toggle switch bends. Both the Flanger and Overdrive have on/off push buttons. A-->B-->C= nasty, heavily distorted drones, while A-->C-->B=spacier, swoopier drones and bleeeps. Nastynastynastynasty. Operates off a 9v pedal adapter and there's an on/off power toggle.
I found this guy in the alley near my house, thinking that I could pull it apart and reuse the case, or maybe the pots, however, when I got home I was pleasantly surprised to find out that actually still powered up! Moments later I found that each one of the 12 outputs gave me controllable oscillations.
Each output gives the same pitch and rate controllable oscillation, however, each one can also be filtered with the knob just above the output. And, there's a master filter/volume knob, too. Runs on a 9v positive tipped adapter.
Of course, not being one to let a perfectly good electronic instrument just sit there innocently being what it should be, I added more knobs and switches that make it squeak and grind. I don't suggest using this for it's original, medical intentions anymore. I think it was meant to control muscle contractions. If you used it now, your muscles might balloon up until you look like a freakish hulk. Like one of those guys that looks like a pile of grapes.
I had this little case that I found in an abandoned house that, I think, was a photo enlarger timer. I gutted it and now it has two simple ring modulators built in. RIND MODULATORS!!!
1/4" mono jacks, 9v power supply with on/off toggle. 4 pitch/rate knobs (two per ring mod).