Connections for 70 V or 100 V ELA speakers. Connections for low-impedance speakers (4-16 Ohms). Integrated audio player with Bluetooth receiver and IR remote control. Wireless music transmission from your music devices (e.g. smartphone, tablet) via Bluetooth SD card slot and USB port, folder navigation and repeat functions (repeat 1, all) 3 microphone inputs with separate volume controls. Mic 1 with phantom power and priority function. Mic 2 and 3 switchable mic/line2 line inputs with separate volume controls. 1 line output, bass, treble and master. control for the output sign7-fold LED level indicator, switchable, protective circuits with LED display: Overload, short circuit, clip limiter, overheatingDevice cooling is via fan; Controllable via IR remote control; Bluetooth (19 inch) 48.3 cm rack installation 2 U