This unit AMAZING sound, so I'm going to list more of the bad than the good.The good - 1) The amp models not only sound organic and natural, but also "feel" wonderful to play. Very sweet clean and low gain sounds (although some clean sounds are a tad distorted).2) The included effects are fabulous. The bad - 1) Requires significant tweaking to get good sounds.2) High gain sounds and some of the effects have significant amount of fuzzy noise, which needs the inbuilt noise gate to reduce. 3) Limited customisation of the signal chain; there is not much room to mix and match many effects together (however, the available combinations should be enough for most purposes). Also limited variety in effects and tweakability. 4) Loose plastic knobs can be easily turned by a stray cable lying across the unit. 5) Pedal sometimes suffers from calibration issues (correctable but annoying).6) Right footswitch placed too close to the pedal, easy to hit one or the other.