So, is it just a cheap vox and that’s what you get? Could a tube be shot? You cant see the tubes, they are blocked by a solid panel. I plugged the same guitar into my 57 twin reissue, and yes its a 40 watt amp, but at half the volume it was considerably louder. It helped a little to increase volume, but it still doesn’t feel like it pushing out what it should. I looked up the manual, and one switch seems to make the tubes run hotter, giving you more head room before break up. Not knowing much about them, I looked at the back and these are a few switches my 15 didn’t have. It’s was too loud for the family, but sitting right in front of it, the main dimed and the gain almost all the way, very creamy, but not ear pain loud. When i plugged into mine, I couldn’t seem to get a loud volume out of it. He also used a floorboard that was 4 ft by 4 ft. I heard someone play one last summer, It don’t know if it was this model as I didn’t get close, but it was loud. I know they are not known for great cleans at high volumes, but the 15 was too short. Ditched it because I would rarely use it, and to me the few times I put it next to a drummer, it lost its clean headroom. By comparison, I had a AC15 with a greenback last year. Had some things I noticed, and was wondering if its me, or this is how they are. Got it for my wife to use, but I played on it a bit yesterday. I just got a used, but very clean condition AC30CC2.