Zuki, how they hold up, I can't answer..I am careful to follow the factory comments..to use only line level..I have pushed these beyond what I find unbearable volume levels....more than any venue I would have used the 802's...
I have over 30 hours of "more than I would use " volume level test periods ..as long as 4 hour intervals...All with clean, clear results...and the heat sink is just slightly warm..telling me they are not over driven...

Logic tells me , If they didn't act up on my test, I have to believe with normal service they will be fine....If not I have that factory "lifetime" warranty..