RACK MOUNT COMPATIBLE: The Pyle PPRE70BT pro audio pre-amplifier has FM radio tuning and a unique recording mode that saves audio via USB/SD port. Also, packed with detachable hardware rack mounts for quick and easy assembly BLUETOOTH COMPATIBLE: Built-in Bluetooth for wireless music streaming receiver that ranges up to 25’+ ft. Works with all of today’s latest devices such as iPhone, android, smartphone, iPad, tablets, computers AUX INPUT AND OUTPUT: This receiver/preamp also features two sets of RCA inputs, RCA preamp out, 2 Mono RCA's for subwoofer output, and Bluetooth that wirelessly connects to your iPod and MP3 player. Includes an FM antenna for better signal reception FRONT CONTROL CENTER: The front panel button control center consists of a power switch, independent input source selectable, bass, treble, mid, balance and master volume adjustment. Includes headphone jack, USB flash and SD memory card readers REMOTE CONTROL: A simple and user-friendly remote control is included with the PPRE70BT, providing all the functionality you need from switching input sources. And, it will allow you to access all functions of the receiver quickly and efficiently