this was an hcca but nit the new school. It is the original hcca 12d. About 11 years old. I didn't even have it but about 33% of where I "show off". I was just cruising listening to the radio, wasn't even a song I liked or it wouldve been cranked louder.
I'm thinking your amp may have malfunctioned. I had a diamond D3 1100.1 go crazy and fry my RD audio 15 a few months back. The amp played fine and then randomly DC'd. Turn it off and on and it would play fine for another 5 minutes before DCing. Thats not damage from 33% volume. Thats something very bad going on there.