Alright so I know I'm new and b/c of that I can ship first if need be. Anyway, here is what i'm trying to sell/trade. My beloved viper 550.6 that was taken out of my ride last week to sell her. Now I need a sub amp for the new sub i'm getting that is more powerfulr. The specs are 50x4@4ohm, 75x4@2ohm, and the sub channels are 75x2@4ohm, 125x2@2ohm, and 250x1@4ohm. Those ratings are underrated i've heard of similar amps doing about 20-40 watts more per channel. Just let me know what ya got for me I'm looking for something around 600 watts at 4ohm.