Denon Professional DN-350MP connects to any sound system via balanced or unbalanced outputs, and plays audio files from the USB port (flash drive or HDD), 3.5 mm stereo AUX input, or from a Bluetooth®-enabled device. This 1RU player also features a smartphone shelf to hold your device while it is paired via Bluetooth and charged from the conveniently located USB charging port on the front panel. Up to (8) Bluetooth devices can be stored in the player's memory. There is also a built-in 60 W mono amplifier for connecting to 4-ohm, 70 V, and 100 V speaker systems with outputs on a Euroblock connector. And, for added convenience, the amplifier has a level control and a POWER switch located on the rear of the unit. An included remote Bluetooth antenna connects to the rear of the DN-350MP via a BNC connector.