The convenience of a front panel USB input. Enjoy music from a variety of sources; the DEH-2300UBB has a convenient USB and auxiliary input on the front. The DEH-2300UBB is powered by our renowned MOSFET 50W x 4 Amplifier, which offers optimal levels of performance with minimal distortion and benefits from our unique Advanced Sound Retriever, which automatically restores the sound quality, staging and density of compressed audio files. With a direct sub drive, you can connect a subwoofer directly to the system without the need for an extra amplifier: an easy solution for lovers of booming bass. And with 1 RCA Pre-out, the DEH-2300UBB adds flexibility to your in-car audio setup, enabling you to expand your sound system with an additional amplifier for rear speakers or a subwoofer.