My 1.5 year old Carvin BX500 died last month at a high profile gig, so my backup Peavey Mark VIII became my main head. It sounds awesome but I was missing the quick and light loadin of a class D mini head so when MF ran the Kustom blowout sale I jumped on the KXB500 and it just got here an hour ago. So far I'm psyched! I've only tried it through a 12" floor monitor, but it sounds good flat and all knobs have a good range of adjustment. The mute light blinks so you really notice it's on, and, most importantly given my recent experience . . . it has a 5 YEAR WARRANTY! Hear that Carvin!? This amp is the same size as the Carvin, but is cheaper and has a much better warranty. w00t!