The Sennheiser AC 3200 is an active, high-power 8:1 antenna combiner for large multi-channel wireless monitoring systems. the AC3200-II combines up to eight channels for transmission via one antenna, with a broadband design covering 500 - 870 MHz. It significantly reduces inter-modulation of wireless monitoring transmitters while keeping backstage clutter to a minimum. Long distances can be covered reliably as the AC 3200 accepts up to 250 mW of input power.