The Shure QLXD4 is a professional digital wireless receiver designed to combine advanced performance features with streamlined setup and intuitive operation. Ideal for live sound, houses of worship, corporate events, and installed audio systems, the QLXD4 delivers stable RF performance, secure transmission, and flexible system control in a compact half-rack format.

Featuring Automatic Channel Scan, the receiver quickly identifies clear frequencies, while Networked Channel Scan shares available frequencies between multiple receivers over Ethernet for simplified coordination and one-touch syncing. Digital Predictive Switching Diversity ensures a stable RF connection, and highly efficient spectrum usage allows up to 22 transmitters per 8 MHz channel (region dependent). With up to 72 MHz tuning bandwidth and more than 60 preset compatible channels per frequency band, the QLXD4 offers exceptional flexibility for complex wireless setups.

For secure applications, all wireless transmissions are protected with AES 256-bit encryption. Remote monitoring and control are available via Shure Wireless Workbench® software on PC or Mac, as well as the ShurePlus™ Channels mobile app for iOS devices. The receiver provides up to 60 dB of adjustable audio gain, a mic/line switchable XLR output, and a 6.3 mm instrument output for versatile connectivity. Additional features include a high-contrast LCD screen with lockout functionality, audio and RF LED meters with peak indicator, and detachable ½ wave antennas.

Housed in durable brushed aluminum construction, the QLXD4 is built for long-lasting reliability while delivering professional-grade digital wireless performance with efficiency, security, and ease of use.