Thanks for everyones input,but i bought the 4480 wasnt happy it was cleaner than the prime 1200-1D but not louder, and yes i didnt touch anything just unbolted the rf and bolted the AB. Big three 2 bats. So i sold it bought a oscope that does audio testing for watts and my new baby RF T1500BDCP and yes it louder than both, at @2ohms it did 1824 and can burp 2028 both clean all tested with my scope. I also put my buddies saz 3500 V1 @ 2 ohms its rated at 1700 did 2200 my scope only does 2,4,8,12,16 ohms love to have a AD-1! I have tested everything i can get my hands since getn my scope my deck new and old pre out voltage. Im going to do a review on soon Pioneer AVH X4500BT Tks! again for everyones input!