Just got this tiny thing today, and after 30 minutes playing with it: I rarely ever get overwhelmed by toans or gear, but this pedal really delivers for an insanely low price! So far I have only played it through my 20 year old Peavey Studio Pro 112 in the FX return. I compared it with the built in distortion and it just eliminates my use for that channel ever again. I also tried it through the clean and drive channels as a distortion pedal or a boost. It works like this too, but it doesn't come close to the energy and feel it gives through the FX return. I cannot recommend this cheap thing enough! As in my case, i really recommend it if you have a small head or combo that sounds meh but has an FX loop. Jesus Mc Christyballs it's good! I'll test it directly through my Focusrite 2i4 soon and record a couple of demos if someone is interested. I'll also try it through a Krank Rev 1 and a 5150II, but that won't be before sometime next week. Score: 10/10 would chug!