The other day this Washburn A-D2 popped up and I was racking my head for a pedal which is an MXR Distortion+ with a Muff tone control.
https://www.diystompboxes.com/smfforum/index.php?topic=132285.0
Skipping through some stuff I found this schematic. Not quite an MXR Distortion+.
It applies to:
- Colorsound Tone Bender Distortion ; fairly rare pedal from maybe the 80's, small box
- Colorsound Tone Bender Reissue (3 knob) ; re-issue from around 2000
Anyway the reason I'm posting is virtually all the schematics online have errors. I rememeber some of the early pics were hard to read (leading to wrong tone control resistors 2k2, 22k instead of 33k). Also a couple of electrolytics were doubtful. Hopefully this fixes everything.
(https://i.postimg.cc/Y47jdbnc/three-knob-tonebender-reissue-cstbri-v11.gif) (https://postimg.cc/Y47jdbnc)
The opamp biasing is like my Red Fuzz but with lower resistors and a bigger input cap.
Less parts and I did not find noise issues compared to MXR+/DOD/Ross.
mac