The PLR34MU is a multi-featured headunit from Pyle Audio. Play music from four different sources. The AM/FM radio uses MPX PLL tuning, can seek/scan, and stores up to 30 presets (18 FM, 12 AM). You can plug in a USB stick or SD card loaded with MP3 or WMA files to listen to your favorite digital music - plus, the track info is displayed on the LCD screen. Or, use the conveniently located 3.5mm (1/8") aux-in port to plug in virtually any audio playing device, including iPod, iPhone, and Zune. With 60 watts each on four channels, this headunit isn"t lacking for power. Get the sound how you want using the bass, treble, balance, and fader controls. The front panel is also detachable for security. Wireless remote control is included.