I think everyone is pretty well acquainted with this amp. It has been discussed many times here. . . crazy amounts of power and extremely light weight - 17 lbs. Spec's here: FTC Power Rating <0.1% THD 20Hz-20kHz both channels driven 400W x 2 @ 8 Ohms 650W x 2 @ 4 Ohms FTC Power Rating bridged mono 1350W x 1 @ 8 Ohms 2100W x 1 @ 4 Ohms A couple of years old, used lightly comes in original box/packaging. $575 shipped in the lower 48. Paypal ok, but buyer covers fees or postal money order. No trades whatsoever please, need the cash.