Kenwood's KDC-MP438U CD receiver offers enhanced connections along with MP3, WMA, and AAC file playback, so you get plenty of listening options right out of the box. The front-panel USB input lets you play files from your USB-equipped MP3 player or thumb drive, and you can plug your iPod® directly into the USB port too. In addition to the USB connection, the stereo offers a convenient front auxiliary input for your non-USB sources. If you have children, you've probably wished for two stereos in your car. The KDC-MP438U's dual zone feature grants that request with its ability to play two different music sources at the same time. You can play your kids' iPod over the car's rear speakers, while you and your spouse listen to a CD on the front speakers. Kenwood's Supreme audio processor enhances the clarity and depth of your music, particularly with MP3 files, tunes from your iPod, or other compressed music. A strong, onboard amp provides plenty of power to drive your speakers, while the 3-band equalizer lets you tweak the highs, mids, and lows to create the perfect sound curve for your car. If you'd like to expand your system, you can add a Kenwood CD changer or satellite radio. Enjoy hands-free cell phone use in your car with Kenwood's optional Bluetooth® adapter. Three sets of preamp outputs make it easier to connect a full setup of external amps and subs. General features: CD player with built-in MOSFET amplifier (22 watts RMS/50 peak x 4 channels) plays CDs, CD-Rs, and CD-RW discs, including discs loaded with MP3, WMA, and AAC files (will not play Digital Rights-protected music files on disc) detachable face remote control Audio features: dual-zone capability for playing different sources over the front & rear speakers System Q Sound Control (6 EQ curves and a 3-band equalizer) "Supreme" audio processing for better sound from your compressed music files speaker settings that allow you to tailor the sound to the size and type of speakers in your car System E's high- and low-pass filters Expandability: compatible with Kenwood's Bluetooth adapter and satellite radio (tuner, service subscription, and antenna required), HD Radio™ tuner ready inputs: front auxiliary and USB inputs outputs: three sets of preamp outputs compatible with most factory steering wheel audio controls $45 obo cp