Shure The GLXD4+ Dual Band Rack Receiver delivers exceptional digital audio clarity. In combination with the GLXD+ Dual Band Frequency Manager provides advanced RF performance.

The Shure GLXD4R+ Z3 is a single‑channel digital wireless audio receiver designed for professional sound reinforcement applications including presentations, performances, houses of worship, conference rooms, and small to medium event venues. It features a metal half‑rack chassis with removable antennas and includes rackmounting hardware for integration into standard equipment racks. The unit automatically scans both 2.4 GHz and 5.8 GHz frequency bands to find clear RF channels and maintain reliable wireless performance. It is compatible with GLX‑D+ handheld and bodypack transmitters (sold separately). The receiver also provides front‑panel charging for compatible rechargeable transmitter batteries and displays key information such as transmitter battery life and RF status on a backlit LCD.

Key Features and Specifications
Wireless Technology and RF

• Digital dual‑band operation in 2.4 GHz and 5.8 GHz frequency ranges (Z3 band: 2400–2483.5 MHz and 5725–5850 MHz)

• Automatic frequency scanning to locate the best available channels

• True digital diversity with two antennas for stable RF reception

• Max operating range approximately 100 ft (30 m) line‑of‑sight

• Supports up to 8 transmitters per band (with frequency manager, more channels possible)

• RF output power up to ~10 mW EIRP

• RF sensitivity ~‑88 dBm typical

Audio and Controls

• Frequency response approximately 20 Hz to 20 kHz

• Dynamic range ~120 dB (A‑weighted)

• Output connectors: 1× balanced XLR (switchable mic/line), 1× balanced 1/4" TRS (Inst/Aux)

• Wireless gain control adjustable from the receiver front panel

• Backlit LCD shows channel, frequency, audio levels, and transmitter battery time remaining