Okey, this is somewhat of a cheap clone of the TS808 or something. The construction is kinda weak compared to a boss pedal or likewise, but it works for home use and such, you might not wanna go on tour with it though ;-) It offers a level a tone and a drive controller. Function wise theres not much to talk about, it's easy to handle. Soundwise I'd say it works best with a low gain setting as a booster, it's got quite some humming when the drive goes up. Overall I'd say for it's price it works well if you don't expect anything beyond the price tag.