Just what the title says. Ever own an amp that sounded great on its own, but once in a live situation it just....... Disappeared? My first experience with this phenomenon was with a 50 watt JCM 900. When the band kicked in, nothing but an angry bees nest. The volume control did nothing except piss off sound guys. Maybe it sounded better if I was 30 feet from the amp? The second amp is the soldano ROS 50 I own. Their was times When this amp would cut, and other times it wouldn't. When it did, it sounded AWESOME! But when it didn't, it was just white noise in the general key of the song. There was no amount of knob twisting that would make it stand out. I'd kinda like to sell the amp, but it's not a very common model, might get sellers remorse. So let's hear what amps let you down when in a live situation?