The Shure ULXD4Q is a high-performance quad-channel digital wireless receiver designed for large-scale professional sound reinforcement applications requiring maximum channel density, security, and networked control. Integrating four independent receivers within a rugged 1RU metal chassis and internal power supply, the ULXD4Q delivers powerful scalability while maintaining a compact rack footprint. With an expanded tuning range of up to 166 MHz (region dependent), it offers exceptional flexibility for complex RF environments and multi-channel deployments.

Featuring digital predictive switching diversity, the ULXD4Q ensures stable RF performance, while optimized scanning intelligently identifies, prioritizes, and deploys the cleanest available frequencies to transmitters via IR sync. High Density mode enables significantly more simultaneous channels within applications up to 30 meters, maximizing spectrum efficiency in high-demand installations. Bodypack frequency diversity further enhances reliability for mission-critical applications. Built-in AES 256-bit encryption guarantees secure wireless transmission across all channels.

Each channel provides independent gain control with up to 60 dB of adjustable gain, dedicated LED meters, and individual XLR outputs with switchable mic/line level. Audio summing functionality allows two or more channels to be routed to selected receiver outputs, enabling customized mix configurations using each channel’s gain adjustment. RF cascade ports allow distribution of RF signals to additional units, simplifying expanded system setups. The receiver also supports Dante™ digital networked audio over Ethernet for seamless integration into modern networked audio infrastructures.

Comprehensive Ethernet networking enables streamlined frequency coordination and deployment across multiple receivers, with full integration into Wireless Workbench® 6 (WWB6) software for advanced coordination, monitoring, interference detection, and remote control. The ULXD4Q is compatible with AMX/Crestron® control systems, the AXT600 Axient® Spectrum Manager, and Yamaha® device ID functionality for simplified channel patching on CL series consoles. An upgraded LCD display with adjustable contrast and brightness, intuitive front panel controls with lockout capability, clear audio and RF LED meters with peak indicators, switchable mic/line outputs, and remoteable ½ wave antennas complete this robust and scalable quad-channel solution, making the ULXD4Q an ideal choice for complex, high-channel-count professional wireless environments.