Hi, I've had a bit of a read around other posts on this but can't quite get my head round it so maybe someone can help me out. I've just bought a TH500 and love the tone. However, I found at a louder rock gig last night that my clip light was flickering quite a bit, basically at the start of most notes. I guess I'm a reasonably heavy player, but while the overall volume was quite loud, it wasn't crazy loud, and I'm worried I'm already at the limit of the amp's power, which (if true) is a bit disappointing. What I don't really understand is why the master volume seems to feed the preamp and not just the power amp. i.e. how do you increase the volume of the power amp, without clipping the preamp? Here's a link to a pic of my settings from last night. https://www.dropbox.com/sh/j9mmypl57uk2hhe/tELMcWDCBa#lh:null-settings.JPG I tried various combinations of gain up or down / master up or down but still seemed to be getting this clipping light flickering at the same overall volume levels. For info, the -10db pad was in, I was playing a Stingray at about 90% on it's volume control, and was playing through a TC Electronic RS210 and a 112 (i.e. 4 ohms load overall). I really expected to get more volume out of this amp without the fear of a clipped signal. Is there something I'm missing? Cheers, Dave.