Features: Quad-Channel Rackmount Receiver, Four SLXD2+/SM58 Handheld Transmitters, Wide 138 MHz Tuning Range, Two RJ45 Ethernet Connections, Two Removable Antennas, RF Cascading, Digital Predictive Diversity Reception, Adjustable Output Level, Audio Summing, High-Contrast LCD, Rugged Metal Construction, Expandable to 32 Mic Channels/330' Range