Features: Quad-Channel, 1-RU Receiver, Four SLXD1 Bodypack Transmitters, Four WL185m Low-Profile Cardioid Lavs, Wide 138 MHz Tuning Range, Two Removable Antennas, RF Cascading, Digital Predictive Diversity Reception, Adjustable Output Level, Audio Summing, Expandable to 32 Mic Channels/330' Range