Pioneer DEHP4100UB SCD Receiver with USB control and OEL CD Receiver with OEL Display, USB Direct Control of iPod, and 7-Way Rotary Commander Advanced Sound Retriever restores the rich, full, dynamic sound to compressed music AUX input to easier plug in your portable media devices XM Radio and Sirius Radio Ready Built-in MOSFET 50 W x 4 amplifier for excellent sound quality