Originally Posted by haze324

Dude that amp blows away the PN4.520 and the RZ42000D. MUCH louder and the added headroom provides better clarity. It's bigger by about an inch than the earlier two amps but still fits (snug). I've connected BT Pros, 6.5's, Arc Moto's, Hertz HCX 690's, and Infinity 693.9i to it and all sounded great.

Honest assessment there are amps that push that kind of power that sound cleaner. However, there aren't many that fit in the fairing the ones that do all of them cost 500+ bucks.