Dream-Rig Circuit 3.3 PUBLIC

Tubulation Distortion Circuit for Dream-Rig Project

"Tubulation" distortion circuit for the Dream-Rig Project. Suggestion: Build two of these circuits; one for Channel 3 and one for Channel 4 in the 1-of-4 Exclusive-Selector, but use them with different settings; for instance, set Channel 3 with less distortion and less gain, for crunch rhythm or moderately distorted solos, but set Channel 4 for maximum gain and distortion, for highly-distorted soloing. Controls Include: Input Gain, Clean Bass, Clean Mid, Clean Treble, Clean Volume, Distortion 1 Drive, Distortion 2 Drive, Distortion 2 Gain, Distortion 2 Tone, Distortion Attenuation, and Output Gain. Clean and distorted signals are mixed in the Output Stage. Alternative: Keep the MOSFETs in one of these circuits but replace the MOSFETs with 12AX7A preamp tubes in the other. Instructions are given with the diagram. Note: Op-amps were chosen to provide additional distortion when overdriven. The battery can be replaced by a regulated +12VDC supply. Experimental circuitry. Breadboard test before committing to a soldered build.