Uncompromising Digital Wireless Audio
When it comes to digital wireless innovation, Shure ULX-D delivers. Indeed, it's become an industry standard for installed wireless. Packing two digital receivers into a single rackmount chassis, the ULXD4D forms the heart of your ULX-D system. Digital predictive switching diversity ensures rock-solid signal stability, and it includes AES 256-bit encryption for applications requiring secure data transmission and wideband tuning for far-ranging compatibility. The ULXD4D flaunts individual Gain controls, LED meters, and XLR outputs for each channel. High Density mode optimizes the ULXD4D to accommodate significantly more active transmitters on a single TV channel. Additionally, RF cascade ports allow the distribution of your RF signal to another unit. You also get optimized frequency scanning, bodypack frequency diversity, and audio summing. Moreover, the ULXD4D supports networked control via Ethernet, Dante integration, and streamlined control using Shure's Wireless Workbench software. Experience unrivaled wireless sound with the ULXD4D — where innovative technology meets potent scalability and unmatched sonic clarity.
Note: The Shure ULXD4D is part of ULX-D's infinitely scalable ecosystem. For a personalized recommendation customized to your specific application, call your Sweetwater Sales Engineer.
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Included in the box:
- ULXD4D receiver
- 2 detachable 1/4-wave antennas
- BNC bulkhead adapter
- 2 x 24-in. BNC cables
- 5-ft. Ethernet cable
- Rackmount kit


Shure ULX-D: high-density performance meets high-fidelity sound
Large-scale installations present unique wireless challenges that demand robust, scalable solutions. Shure's ULX-D system excels at this. Built to handle a wide range of input sources while shielding RF transmissions from smartphone interference and rogue signals, ULX-D delivers professional-grade wireless performance at any scale. This intelligent system offers pristine 24-bit/48kHz digital audio with ultra-low latency and wideband tuning for maximum frequency compatibility. It automatically optimizes for any input without needing manual transmitter gain adjustments and supports a broad range of trusted Shure microphone models. Security is robust and reliable, thanks to AES 256-bit encryption, and High Density mode enables up to 47 active transmitters on a single 6MHz TV channel — without compromising audio quality. Additional features include an integrated antenna splitter, networked control via Ethernet, and advanced frequency coordination through Shure's Wireless Workbench software. For flexible system integration, ULX-D dual and quad receivers come equipped with Dante and AES67 digital networking. Plus, the transmitters support both AA batteries and Shure's intelligent rechargeable options. At Sweetwater, we confidently recommend ULX-D. True to Shure's reputation, it delivers industry-leading sound quality and agile RF performance that meet the rigorous demands of modern installations.
Shure ULXD4D Features:
- 2-channel wireless digital receiver for Shure ULX-D wireless systems
- Digital predictive switching diversity ensures rock-solid signal stability
- AES 256-bit encryption provides secure data transmission
- Wideband tuning supplies far-ranging compatibility
- Individual Gain controls, LED meters, and XLR outputs for each channel
- High Density mode accommodates significantly more active transmitters on a single TV channel
- RF cascade ports allow distribution of your RF signal to another unit
- Optimized scanning automatically finds, prioritizes, and deploys the cleanest frequencies to transmitters over IR sync
- Bodypack frequency diversity ensures uninterrupted audio for mission-critical applications
- Audio summing routes both audio channels to each XLR receiver output
- Supports networked control and Dante digital networked audio over Ethernet
- Advanced frequency coordination through Shure's Wireless Workbench software
- Rugged 1U metal chassis
