So I am only one piece away from having my system just right... so anyone looking to sell rockford amp 400-600 2channel hit me up... I have a Kenwood fully motorized head unit, with Sirrius satellite hooked up..which for the record was a great investment if you like music! in the front rockford fanatic X component system. In the mid Rockford punch X 6.5 with adjustable tweeters (loud azz speakers)... and last but not least 2 punch de 10's in a band pass box in my integra. right now i have an old school punch 100a amp pushin them which gives some bump but ...not enough, u can understand i'm sure. Also going to be looking for a custom box built so if anyone knows where to get a decent price on the amp or a custom box.. hit me up I do only want a Rockford amp to keep with the rest of the equipment