The Shure ANX4 is a high-channel-count, scalable wireless receiver housed in a single 1RU chassis, capable of receiving up to 16 channels of Shure Axient Digital or 24 channels of Shure ULX-D (not simultaneously). Unlike Shure's fixed-channel receivers, the ANX4 comes without inherent active channels. Capacity is unlocked via perpetual channel licenses, allowing users to scale a system incrementally and reallocate licenses across multiple ANX4 units as needs change. It covers a tuning range of 174 MHz to 2 GHz (excluding the ULX-D 902 MHz band) and outputs digital audio over Dante/AES67. The ANX4 is built for large-scale productions — broadcast trucks, corporate AV integrations, and touring rigs — where consolidating high channel counts into minimal rack space and simplifying antenna distribution are priorities.
The ultimate high-tier, high channel count wireless receiver, Shure ANX4 receives up to 16 channels of Shure Axient Digital or 24 channels of Shure ULX-D wireless audio in a single rack space. Delivering maximum flexibility, ANX4 does not ship preconfigured with active wireless channels, allowing you the opportunity to purchase channels in single- and four-channel increments and activate the exact number of channels you need. Licenses can be activated in one ANX4 and later removed and activated in a different ANX4 as needs change. ANX4 channel licenses are perpetual licenses, not subscription-based licenses, and can be purchased through the same authorized suppliers ANX4 hardware units are sold (or at Shure.com/anx4) and managed via your ShureCloud user account. All the exceptional features found in award-winning Axient Digital and ULX-D receivers that have made them standards on stages, in facilities, on tour, and on location throughout the world are available in the ANX4**. Whether you operate ANX4 in Axient Digital or ULX-D transmission mode, ANX4 maximizes your budget, rack space, and rack weight in delivering large wireless audio channel counts in a single rack design. What’s more, this 1RU format also enables streamlined antenna configurations for large channel count environments.
*Channel licenses are sold separately and required for activating audio outputs.
**System features are dependent upon activated transmission mode: Axient Digital or ULX-D (ANX4 does not support both systems at one time).
GENERAL
Dimensions
- 1.7” x 19.0” x 11.3” (44 mm x 482 mm x 286 mm)
Weight
Housing
- Steel; extruded aluminum (Case Top: Aluminum)
Thermal Power Dissipation
- Maximum: 61.3 W (209.3 BTU/hr) Idle: 49.2 W (167.9 BTU/hr)
Power Requirements
- AC: 100 to 240 V AC, 50-60 Hz, 1.4 A max
- DC: 11.3 to 16 V DC, 10 A max
Fuse
Operating Temperature Range
- -18°C (0°F) to 50°C (122°F)
Storage Temperature Range
- -29°C (-20°F) to 74°C (165°F)
RF INPUT
Spurious Rejection
Connector Type
Impedance
Configuration
Bias Voltage
- 12 to 13.5 V DC, 150 mA maximum, per antenna. Switchable on-off.
Insertion Loss
RF
RF Carrier Frequency Range
Working Range
- 100 m (330 ft)
- Note: Actual range depends on RF signal absorption, reflection, and interference.
Gain Adjustment Range
- -18 to +42 dB in 1 dB steps (plus Mute setting)
RF Tuning Step Size
Image Rejection
RF Sensitivity
- ULX-D: -95 dBm at 10-5 BER
- Axient Digital: -93.5 dBm at 10-5 BER
AUDIO
Latency
- ULX-D Standard: < 2.9 ms
- ULX-D High Density: < 3.2 ms
- Axient Digital Standard: < 2.1 ms
- Axient Digital High Density: < 3.0 ms
Audio Frequency Response
Audio Dynamic Range (Typical, 20 Hz to 20 kHz, System Gain @ +12 dB)
Total Harmonic Distortion (-6 dBFS, 1 kHz, System Gain @ +12 dB)
System Audio Polarity
- Positive pressure on microphone diaphragm produces positive voltage on pin 2 (with respect to pin 3 of XLR output) and the tip of the 6.35 mm (1/4-inch) output.
HEADPHONE MONITOR OUTPUT
Audio Frequency Response
Configuration
- ¼-inch / 6.3 mm connector, unbalanced stereo
Impedance
Maximum Signal Level
Pin Assignments
- Tip: Audio +, Left
- Ring: Audio + Right
- Sleeve: Ground
DC MODULE
DC Input Voltage Range
- 11.3 to 16 V DC, 10 A max
Protection Modes
- Reverse Polarity, Over Voltage
Connector Type
- 4-pin XLR (male)
- Note: Shell of the DC inlet connector is connected to Chassis Ground
Recommended Cable Gauge
- 6 feet (or less): 18 AWG (1mm)
- 7-15 feet: 16 AWG (1.5 mm)
- 16-25 feet: 14 AWG (2.5 mm)
- Note: Total cable length should not exceed 25 feet
NETWORKING
Network Interface
- 10/100 Mbps, 1 Gbps, Dante Digital Audio
Network Addressing Capability
- DHCP or Manual IP address
Maximum Cable Length
