So far mine has worked great. I think one of my preamp tubes is taking a **** on me though. When I play through the High or Low input on the front of the amp i get a crackling noise from time to time. It never happens when I play through my effects loop though so I'm pretty sure it's a preamp tube. I plan on having the whole thing re-tubed soon anyway so it's cool. Mine is a halfstack and it will shake the walls. My wife hates it. HAHAHAHA :D