This is a BOSS Audio 750DI 320 watt in dash multi-media player with built-in iPod docking station and front 3.5mm auxiliary and USB inputs. This solid state head-unit features a state of the art built-in iPod docking station with full iPod control while delivering 320 watts of output power to your stereo speakers. Not to mention, it is universally compatible with any external digital media player on the market by way of its front panel 3.5mm auxiliary input, USB interface and SD memory card slot allowing for hours of digital media enjoyment. Incorporating an external amplifier into your system is quick and easy with the equipped RCA pre-amp outputs. Other features include: a full function infrared remote control, independently adjustable volume, bass, treble, balance and fader controls and a built-in loudness control that will allow you to fully customize the sound of your music at any time. This unit has been remanufactured to 100% of Boss Audio's specifications.