Well are you wiring a subwoofer to it or no? That's why I posted that.
I had an input on my amp go bad, often when that happens it sends a bad signal through RCA's to headunit and fries subwoofer output. I pulled all my equipment when all that happened, so never could tell if it sent the bad signal to the HU or not.
I have a almost brand new pioneer premier dehp790bt (bluetooth) head with aux input. this head unit is fully loaded with features. go to pioneer's website and look at all the spec's.