I bought it, took it home and played with it while I tweaked the inner pots for a couple hours, then put it up against the Turbo Rat. I can get a pretty similar sound out of both. With the gain all the way down on the FS, I got a similar sound the the gain at noon on the TR, and the gain from noon-max on the FS sounded pretty much the same as a cranked TR. That's really the only downfall of the Fat Sandwich, is the limited gain range. You can go from slightly saturated distortion to really saturated distortion. But it doesn't get harsh like my Turbo Rat does, it stays fat and beefy, even with the tone and presence up.
All in all, it's a kick ass pedal, and go for pretty cheap used, which is good considering their $180 price tag new.
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Here's my friend making a stupid face while playing the Ric
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