My Vox AD30VT is usually set down to somewhere near 3 or 4 Watts. I had it on 30 Watts for a blast and it shook the house, scared the cat and the neighbours neighbour could hear it. Wouldn't mind if I wasn't a 10 thumbed tone deaf muppett and it sounded good, ut it's just badly played noise.
Right bugger about the amp mate, but lives and learns. At least it only looks like pride that got a dent and not your wallet, so no real harm done.