Practice Tips - Part 15, Amplified - Part 2
If your amp is modern and has a distortion/lead/gain channel, don't use it. Practicing with the clean channel makes you work hard for every bit of tone an amp has to offer... helping you to develop great technique. Too much distortion hides poor technique, is more prone to feedback and is inferior in tone to a tube amp that is driven with good cupping and technique. With all this said, the one nice thing about a distortion channel is when you're trying to play whisper quiet (sensitive neighbors, sleeping kids... you get the point) with a distorted tone, you can still achieve it.