Shure QLXD4 Half-Rack Single-Channel Digital Wireless Receiver

With digital predictive switching, Automatic Channel Scan, and AES 256 encryption, the Shure QLXD4 receiver delivers a secure and pristine wireless signal.

Featuring transparent 24 bit digital audio quality and incredibly efficient RF spectrum usage, the QLXD4 is a half-rack digital wireless receiver for use with QLX-D Digital Wireless Systems. Ideal for presentation spaces, music venues, and houses of worship, the QLXD4 combines professional features with streamlined setup and operation. Automatic scanning quickly finds open frequencies and one-touch sync quickly deploys them to transmitters.

Ethernet networking enables networked channel scanning across multiple receivers and Wireless Workbench software integration for remote control of receiver settings from a PC or Mac.


- 64 MHz tuning bandwidth (region dependent)
- More than 60 preset compatible channels per frequency band (region dependent)
- Up to 17 compatible systems per 6 MHz TV channel; 22 systems per 8 MHz channel
- Digital predictive switching diversity ensures solid RF connection
- Automatic channel scan quickly finds the cleanest frequency
- IR sync deploys selected frequency to transmitter
- Ethernet networking provides streamlined setup across multiple receivers
- Networked channel scan configures open frequencies for all connected receivers
- AES 256-bit encryption for secure wireless transmission
- Up to 60 dB of adjustable audio gain
- High-contrast LCD menu and controls with lockout feature
- Audio and RF LED meters with peak indicator
- Detachable 1/2" wave antennas
- Mic / line switchable XLR output
- 1/4" instrument output
- Durable aluminum read more construction with brushed finish
- Professional-grade rack hardware included
- Compatible with Shure Wireless Workbench 6 control software
- Remote monitoring and control from iOS devices via ShurePlus Channels mobile app
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Dimensions (H × W × D): 41 × 197 × 151 mm
Weight: 777 g, without antennas

Power requirements: 12 V DC @ 0.4 A, supplied by external power supply (tip positive)

Spurious Rejection: > 80 dB, typical

Connector Type: BNC
Impedance: 50 O

Gain Adjustment Range: -18 to +42 dB in 1 dB steps

Pin Configuration:
- 1/4" (6.35 mm): Impedance balanced (Tip = audio, Ring = no audio, Sleeve = ground)
- XLR: Balanced (1 = ground, 2 = audio +, 3 = audio -)

- 1/4" (6.35 mm): 100 O (50 O Unbalanced)
- XLR: 100

Full Scale Output:
- 1/4" (6.35 mm): +12 dBV
- XLR: LINE setting = +18 dBV, MIC setting = -12 dBV

Mic/Line Switch: 30 dB pad

Phantom Power Protection: Yes

Network Interface: Single Port Ethernet 10/100 Mbps
Network Addressing Capability: DHCP or Manual IP address
Maximum Ethernet Cable Length: 100 m
Dimensions and Weight in Packaging
Band G50 (470 - 534 MHz)
Shipping Weight: 8.25 lbs
Shipping Dimensions: 19 x 18 x 4 in
Manufacturer Part Number (MPN): QLXD4=-G50
Band H50 (534 - 598 MHz)
Shipping Weight: 8 lbs
Shipping Dimensions: 19 x 18 x 4 in
Manufacturer Part Number (MPN): QLXD4=-H50
Band J50A (572 - 608 MHz)
Shipping Weight: 8 lbs
Shipping Dimensions: 19 x 18 x 4 in
Manufacturer Part Number (MPN): QLXD4=-J50A
Band V50 (174 - 216 MHz)
Shipping Weight: 8.25 lbs
Shipping Dimensions: 20 x 18 x 4 in
Manufacturer Part Number (MPN): QLXD4=-V50

Consumer Alert

Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC's wireless microphone website at

NOTE: None of the wireless systems we carry are capable of violating the FCC guidelines stated above. We are presenting this information as a matter of legally required disclosure.

For support or warranty questions, please contact the manufacturer:
Phone: 800-516-2525

Band G50 (470 - 534 MHz)

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