Boss Audio Systems BV6550 is a car audio system with an in-dash DVD/MP3/CD player with front panel USB, SD card port, and an auxiliary input. It also features an AM/FM receiver with 30 station presets. The system's 80W x 4 maximum output power provides plenty of volume to fill your car with sound. The DVD player supports a variety of formats, including DVD, MPEG4, VCD, MP3, and WMA. The USB and SD ports allow you to connect your portable media devices and play your music directly from them. The auxiliary input lets you connect other audio sources, such as a portable CD player or MP3 player.