I'm really late to the party. Turned 65 this year and don't know how I missed out on this. About 4 months ago, somehow, luckily, ran across across a forum that the Joyo American was being discussed. Googled, it to find tons of positive reviews. When I saw how cheap they were ($39.99), I almost did not buy one... figured it could not be that great. Decided, I had nothing to lose. That was 4 months ago, and I'm still blown away. Without a doubt, the best money I have ever spent on any pedal (and trust me I've bought a lot). I'm running it through a Roland JC22 Jazz Chorus (plugged into guitar input on amp). From the moment I plugged it in, I was floored! As others have said, this is not really a distortion or overdrive pedal. It is an amp simulator (supposedly Fender 57 Deluxe amp). All I know is that it turns my JC22 into another animal. With my Strat, and drive around 1 or 2 o'clock I feel like I'm playing through an expensive boutique amp. Hendrix chord noodling sound like a sand, glass, and wd40 coming out of the amp. Nice, smooth, bouncy, but gritty. Responds beautifully to pick attack. Play soft and its chimey and punchy, dig in and here comes the grit, but really good grit. You can feel the amp reacting to everything you do, like a really good tube amp. I keep the voice knob below 12 o'clock, usually around 9. The voice knob is tied to the Mid knob, adjusting one will affect the other. This is important if you turn up the voice and don't compensate by lowering the Mid, it will not sound good (at least in my case). I keep the Mid around noon with voice on 9. The Low and High knobs stay between 12 and 2 for what I do. To me, keeping the drive below 12 makes it behave like an equalizer, which is pretty cool to color your sound. Its an absolutely great pedal.