The Media Operator BT from American Audio is a fast, simple, and reliable all-in-one MP3/Bluetooth media player designed for permanent installations where easy music control is required, such as in restaurants, gyms, or retail stores. It is also excellent for mobile entertainers. The Media Operator BT features digital playback from SD cards or USB flash drives/hard drives. It offers complete control over MP3 playback, a microphone input (¼-inch/XLR combo jack), a master volume control, and three line outputs. Connect the device directly to active speakers, an amplifier, or a second mixer via the balanced XLR, ¼-inch, or stereo RCA outputs.