I need some more KICK from my HT receiver - Onkyo 130 X 7. ...My fronts are JBL 15 inch, compression drivers and slot tweets. Anyway, I'm looking at Crown amps 802 series with 500 watts per side into 8 ohms that I would run from the pre-amp outs on the Onkyo. They only concern I have is THD is high at .5%. Is this amp too dirty for HT? Thx..