I ordered one of these used ones. FedEx dropped it off an hour ago. Already used it on my old toyota pickup I got. Big differance in sound after using the dd1. Much cleaner sounding now at high volumes.
My system in this truck consists of a alpine deck, older fosgate 400.4 amp with only front channels being used for now pushing 2 6.5 punch separates and 2 5 1/4 coax punch speakers wired parallel for 2ohms. I have a new shallow 10" sub to add but haven't had the time to build a fiberglass box. I plan on powerin that with the rear channels of the amp.