i have ran a7hc for years and still own 4 of them, it is my 2nd fave amp behind my vlx400, it is a beast and they are totally indestructible, small footprint only 13 inches long, for comps there only rated at 50rms, 95 percient efficient with only a 80 amp draw, built right here in america by zed audio, co designed with jake from cadence. it is their best amp they ever made, they have been know to put out 1400rms for the 2003 version, you can tell the differense by the silver clis underneath, if there black its the 1200rms version. most sites state its 1200rms but the 2003 book from cadence states its 1400rms, there really tanks, i seen a guy putsing around with these l7's i sold him and told me they weren't hitting and i disconnected his bxi1608 and hooked up my a7 and they were jumping out of the box. they have a huge colt following, you wont find a bad review and if anyone talks shit about them they never had their hands on one, plus if anything ever happens to it, paul and roy are very nice people and will work with you. i have ven had them repair stuff for free, ps i have never seen a a7 blow