This (very small) pedal delivers an extremely warm tube-like overdriven sound. It lends itself to classic rock, and even jazz, not to hard rock / metal in my opinion (for this reason I rate the sound only 4 stars). The warmer tones are obtained with the treble switched OFF. When treble is ON, volume needs to be increased, and even at the highest treble setting, tone remains very warm.
The construction is excellent, but the pedal switch (perhaps a bit too small) has a crunchy, noisy engagement that requires a bit of a stomp - which I find annoying (hence only 4 stars for handling)