Shure QLXD4 Digital Wireless Receiver (J50A: 572 to 608 + 614 to 616 MHz)

The Shure QLXD4=-J50A is a digital wireless receiver designed for engineers, performers, and presenters who need consistent, professional sound without fuss. It integrates easily into medium-size venues such as conference halls, houses of worship, and small theaters, delivering the clarity audiences expect while freeing users from tangled cables.

Working in the J50A spectrum that spans 572 to 608 MHz and 614 to 616 MHz, the receiver delivers 24-bit audio at a 48 kHz sample rate. Digital Predictive Switching Diversity continuously selects the strongest RF signal, so dropouts stay rare, and AES-256 encryption keeps spoken word or proprietary content secure. When several microphones are in play, the system can support up to 60 compatible channels in the same location, a real advantage for multi-mic productions and corporate events.

Setup is quick. An automatic frequency scan finds an open channel, and an infrared sync sends that frequency to a QLXD1 bodypack or QLXD2 handheld transmitter in seconds. For networked control, the built-in Ethernet port ties into Shure Wireless Workbench software or Shure mobile apps, allowing remote monitoring of RF, audio levels, and battery time. A straightforward front panel pairs a bright LCD with intuitive navigation buttons, so you can confirm status at a glance even in low-light situations. Audio routing is flexible thanks to a balanced XLR output that can be switched between mic and line level and an unbalanced 1/4 inch output. The chassis is built from metal and sized for a half rack, making it easy to secure in a road case or installation rack and durable enough for daily use.

• Operates in the J50A band: 572 to 608 MHz plus 614 to 616 MHz
• 24-bit, 48 kHz digital audio for clear, detailed sound
• AES-256 encryption protects confidential transmissions
• Handles up to 60 compatible channels in one venue
• Digital Predictive Switching Diversity maintains a stable RF link
• Automatic frequency scan and infrared sync speed up setup
• Ethernet networking enables remote monitoring and control through Shure software and apps
• Front-panel LCD and simple controls make operation intuitive
• XLR mic or line output plus 1/4 inch output provide flexible connections
• Works with QLXD1 bodypack and QLXD2 handheld transmitters