ppi900.4? yeh it's cuz they kick nads and then some... i have one running 4 PWX 6.5's on two channels and two tweeters on the other two channels and it doesn't even warm up.
i scored it for 115 last month //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif