i had one of their 600w 12in subs+box and hooked it up to my pheonix gold amp, blew it out in 1.5 seconds on low volume and half bass setting. Just goes to show what happens when you try to compromise price for quality. I love listening to music but my sound isnt top priority to me so i stay with pioneer, very nice quality for a pretty nice price. a good way to save money is to do the install yourself.