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I know you guys love this stuff. What is it? I'll try to post more when I can.

I had to separate the screenshot.


Screen Shot 2018-03-24 at 7.54.06 AM.png

Screen Shot 2018-03-24 at 7.53.53 AM.png
 

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Early ‘80’s Boss OD-1. Aaaaaaaaand “winner”?
 

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5B00C098-A2A6-4539-AE93-D4E78C8B4702.jpeg
Ok, round 2:
Name this circuit!
 

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Early ‘80’s Boss OD-1. Aaaaaaaaand “winner”?
Actually it was the 2nd iteration that used transistors for the input and output buffers. The 1st issue was this one, that used a quad op-amp for the overdrive and buffer portions.


Best guess on the other board is a tremolo, given the TA7555 chip.
 
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