I've had this amp for 3 months now and it seems to get better every day. It has about every feature you could want (assignable reverb, boost, effect loop) but the sound of this amp is the best feature. The clean channel on this is as good as any amp I've played through. Crank it to the verge of break up, add a good overdrive and you'll not want to put your guitar down. The overdrive channel goes from mild crunch to full saturation with outstanding articulation. One cool thing on this amp is the level controls on the effects loop, you can patch a cable and turn these levels down and crank up the volume of the amp for more breakup at lower volumes. One thing I should note is the size of this amp is not as listed, it actually measures 22.5"w X 20"h X 9.5"d. This equals about half the cubic volume listed in the specs, but I assure you there is more than enough low end. Sweetwater's customer service is as good as you'll find anywhere.