My friend Dave lent me this pedal and it sounds wonderful. Very quiet, and sound great in front of the amp, or in a serial dumbleator loop. The tone control is perfectly voiced and has a wide range. Turned completely off, the repeats have a pleasing thickness and 'thud' to them. Turned up higher they get clearer, but still smooth. And the degrade and morph into a wonderfully warm stew of tone I haven't had much luck using analog delays for clean tones as they tend to be too dark/muffled, but not so with the retrosonic. Great product.