I have a used Denon Rockford 8250 TI for sale. I recently sold my car and I am not putting a system in my new car. The unit fuctions and looks as new. I do not have the original box or manual but I am the original owner. The manual is available for download from Rockfords site. I am looking to get about 350.00 for the HU. I am not interested in any trades. Thanks.