inputs.text: zx7501 sweet amp - let start saying bought item slightly used still kick ass amp amp take hard punishment long set system appropriately noticed amps board protection system saves amp ever drawing much power system blowing self know mean frying self accidentally found fried sub replace itgood thing back ups idea fried sub due much power going sub rereading manual sub found set 1ohm making amp draw much power sub take essentially amp working harder alpine typer kicker zx7501 pushing self harder intend manufacturesgood 25 hours use 13 days lucky memy wallet sub went amp still good say amp really step asked dont thinking probably amp drawing around much 1200 watts rms alternator pushes 1400 watts system pounding night lights would dim bit good sign amp drawing bit much power electrical system systems especially night head lights used good indication know board protection system turn start notice sound cuts bit sub starts hit hard peak say happens make sure got everything set right sub replace setup correctly never issue sound ever cutting peak times sub pushed hard amp also good job filtering unwanted frequencies sub nice thing dont aftermarket headunit due work equalizershave mine connected car adapter connects factory amp car[ bmw owners e46s easy install know tip seen youtube videos forms people run remote wire fuse box front back car no need amp back amp also remote wire[ white ] tap saving head ache extra long step ] remote comes included also works good long care full not damage wirecan easily replaced phone cord aka one handles dsl type work[ regular phone wires 2 wires inside ones used dsl uses 4 wires inside cable visibly seen connection side 4 copper connections instead 2 plastic piece ] hope good reviewadvise always look reviews forms videos get stuck sticky situation