What an amazing pedal. It's so much more of a booster. Goes from subtle boost to overdrive and so transparent I found myself using it for clean jazz stuff. It just makes the amp sound better. Some boosters have a very peaky effect which results in a mid or treble boost which causes your ears to ache after playing for a 1/2 hour but this thing is the most transparent and natural boost I've ever heard. A friend of mine and I tried it next to the K*** booster and both agreed that this was much better and much more versatile. Sounds great with a strat, mini humbuckers and full sized humbuckers too. For folks who have tried the AC booster - How does it differ from the RC ? Is it useful to have both?