I had a good experience with Parasound service for a JC5. Somehow, when I was away from home, but my wife was home, the music came on full blast. My wife did nothing to turn it on - it came on on it's own. After 4 minutes my speakers were smoking from overheating. My wife called me on the phone when this happened, and I explained how to turn it off. It may have run for 4 or 5 minutes.
Parasound in San Francisco tested the JC5. Luckily, I could drive to SF in one hour. Even though I prepaid for a standard service inspection, they refunded it and did not charge me to test it because the JC5 was unharmed and running fine. Since then, I set the rear volume limiters on the back of the JC5 to about 50% (12 o'clock position). Now it is limited to the max that I can withstand when listening.
The amp and speakers had nothing to do with it coming on when I was away. I had other software with ipad control and I assume that was somehow triggered. It's been 3 years and it has not happened again.