Very basic sounding but delivers a great tone. Can't go wrong for the price. My friend recommended Donner to me and they're great for live performances. It really helps get a great tone with a single coil and breaks up the sound nicely, as well as giving clarity to each string.
This pedal is definitely good for bringing up the volume of your single-coiled guitars with high-compression, or for evening out the volume of chords with humbuckers at low compression. But trying to use compression above 10 or 11 o' clock with humbuckers or high-output pickups in general results in a breaking up of the signal that just doesn't sound good to my ears. But it IS well worth the money.