It's
Just Another Tube Screamer. According to this site, it's based on the ProTone Dead Horse (aptly named) Overdrive. I pulled the Dead Horse schematic (attached) from the web, this should give a clue what will be on the parts list. IC is not identified, but since the Tube Screamer uses diodes and not the opamp to create distortion & clipping, pretty much any low-noise opamp will work. You're looking for a dual opamp in an 8-pin DIP package such as TL072, NE5532, JRC4558, LM833, OPA2134, etc. Before you build this one, you might want to check out all of the other TS clones available on PedalPCB.
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