inputs.text: big power small package - powerful thought fuse photo blue maxi indicates 15 ampre fuse actually 30 ampre green maxi fuse amp questionable efficiency im not sure much power released heat much put audio wave speakers amp kind got warm short usage low volume bench testing im guessing somewhere 7075 efficiency range amp blew inline 15 ampre fuse bass dropped not one amp fuse closer battery definitely pulling power amp like shook rearview brief 2 seconds fuse didnt break running properly great ampthe shipping time longer expected thought shipping somewhere us actually came hongkong taken 2 months get arrive 15 months early aka 2 weeks bought another amp planned sell got july 16 2015 amp arrived woofers laying around im gonna get another enclosure put woofers use one unit itll sit box everything organize not afraid buy amp cooling fan good buy