My apologies if this information is posted somewhere else. Please let me know if it is a duplication I recently replaced my Xotic RC Booster with a Durham Sexdrive pedal to see if there was any appreciable difference, or if I preferred one over the other. First things first. This pedal is SOLID. It is heavy, but build to stand some serious abuse, much more than I'll probably ever provide it. The Durham website says that full-size potentiometers are used in this pedal, and while I can't say where that would benefit me, I can say that they turn more smoothly than most pedal knobs. They take a bit more torque to wist, but seem to stay where you put them, which could be good when using a cramped pedalboard if you have concerns of accidentally moving something with your foot. I like the large chicken-head knobs for the gain and volume controls. It is easier for me to tell where they are set while standing than the RC Boosters smaller controls. The tone knob is smaller than the other two, but works the same as the others. A smooth turn and a fairly full sweep. It has a mini switch above the tone knob designed to add some compression if desired. Now the sound. Well, it is a booster pedal, and not really intended to change your sound that much. That said I tried it in each of the 3 modes: For my examples I used my Duesenberg Starplayer into a 65 Amps London with Avatar 2x12 with a Celstion Blue and G12H30. This amp is designed to rock out at "relatively low volumes...", but is still pretty loud. The pickups of the Starplayer have alot of output, so the amp starts to break up fairly early, but I tried to keep it as clean as possible for the demonstrations. Volumes on about 3 on the LO inputs. Sexdrive volume was set at just above unity. NOTE (The website states the pedal is non true-bypass, but that there is little to no tone change with it in line. I could not tell a difference when the pedal was bypassed, so it appears to be true for me.) No Compression - Very open sounding. Just seems to make it a little bigger, or louder if so desired without changing things too much. Sounds good, like I turned them amp from 3 to maybe 5. This would make a great method for a strict clean boost. Soft Compression - This added a little "stick" to the sound. Still made the amp sound like it was turned up from 3 to 5, but I got some of the compression that I get with the amp driven harder. I'm really liking the pedal at this point, and it is hard for me to continue my review without widdling away on the guitar. Hard Compression - This is where the pedal changed for me. The pedal really had the amp cooking at this point. It felt like the amp got turned up to about 6 or 7, which is where I usually set it, but the overall volume could be controlled by the Sexdrive, while keeping the feel intact. I had been looking for a compressor pedal for some time now, but don't think I'll need one as the Sexdrive does everything I'd like a compressor to anyways. I didn't have a ton of time to play with it last night, but so far so good. I'm eagerly anticipating getting the amp up to gig volumes and experimenting. For now I'm going to leave it in the Soft Compresison mode and leave the amp at 3. Congratulations Mr. Durham. Great pedal! I'll be checking out the Mucho Boost and Crazy Horse in the future as well. If anyone has any other questions please let me know and I'll do my best to answer.