The Catapult RX4M is a four-channel mic level splitter and isolator that allow you to split four mic feeds and transmit them over a single standard cat5 shielded twisted pair cable. This allows you to split mics to three different locations; such as front-of-house, monitors, and a recording device. Mic level isolation transformers in both units keep each destination isolated from the others, eliminating problems that arise from ground loops such as buzz and hum. The RX4M has four direct XLR-M outputs and four isolated XLR-M outputs. Both units feature RJ45 type Ethercon connections with ground lift switches. Phantom power can be provided to the mics via the direct outputs, so long as a shielded Cat 5 cable is used.