This is a great pedal for the price. It sounds just a tiny bit digital and the sustain isn't quite right, but it's a good pedal. I highly recommend if you can't get the Boss compressor pedal.
I bought this looking to get a better bass tone, and that is exactly what I got. Although it's good for and bass, I normally use it for my bass to kind of bring to life. Don't think just because it is cheap, it is bad. I recommend it. Just be careful with it (this is not a stomp box it's a pedal).
This is my first Compressor and at first I had no problems but as time has gone by I've noticed I'm having problems getting good natural decay. This has helped sustain notes but then it just suddenly dies and I'm not sure how to get it to decay more naturally.