Audio features: System Q Sound Control (8 EQ curves and a 3-band parametric equalizer) high-pass filters (speaker and preamp outputs), low-pass filter (sub preamp output) speaker settings that let you tailor the sound to the size and location of speakers in your car 24-bit digital-to-analog converter Expandability: built in iPod control no adapter necessary, but adding Kenwood's optional connecting cable lets you leave your iPod cable at home compatible with optional Kenwood Bluetooth adapter, satellite radio, and HD Radio tuner inputs: front panel auxiliary and USB inputs outputs: 6-channel preamp outputs (4-volt front, rear, sub) Can ship cash app and zelle!!! payments shipped priority usps same day tracking Plenty of refencese