The Shure U4RS+ is a professional dual-channel UHF true diversity wireless receiver, representing a core component of the Shure UR series wireless microphone systems. It is engineered to provide exceptionally reliable, high-fidelity wireless audio reception for the most demanding live performance, broadcast, and installed sound applications. This receiver houses two independent tuner modules in a single 2U rack-mountable chassis, effectively functioning as two separate receivers in one unit, which optimizes rack space and simplifies cabling for multi-channel systems. It operates on selectable UHF frequency bands and employs true diversity reception with two antennas per channel, continuously selecting the strongest signal to combat dropouts and multipath interference, ensuring stable audio even in complex RF environments.

A key strength of the U4RS+ is its integration into the sophisticated Shure UR system ecosystem, which includes features like automatic frequency scanning and selection to avoid interference, and compatibility with Shure's Wireless Workbench software for remote control, monitoring, and coordination of large wireless networks. The receiver features a comprehensive backlit LCD display for each channel, showing frequency, RF and audio levels, battery status of the paired transmitter, and system status. It provides both analog audio outputs (XLR and 1/4") and digital audio outputs (AES3) for maximum connectivity flexibility. Advanced networking via an Ethernet port allows for centralized control and monitoring from a computer, a critical feature for large-scale events and installations.

Built to the rugged standards required for touring, the U4RS+ is designed for continuous, reliable operation. It is trusted by major sound companies, broadcasters, and theatrical productions worldwide for its bulletproof performance and comprehensive feature set. When paired with Shure UR series transmitters, it forms a complete, professional-grade wireless link that delivers crystal-clear audio with the reliability and control needed for mission-critical applications where wireless failure is not an option.