I have 4 new gp3000 pro i need to sell or would trade for 12"s or 15"s. the amp is a 3000@1ohm and will get 3500watts or more on 16volt looking to get 500 ship on eachor trade for some good subs i need 6 12 or 4 15" let me know what you have. I have used 2 of them for some testing. all amp or 3mo old
