Shure QLXD2/B58A Digital Handheld Wireless Microphone Transmitter with Beta 58A Capsule (J50A: 572 to 608 + 614 to 616 MHz)

The Shure QLXD2/B58=-J50A is a transmitter you hold in your hand, made for the QLX-D digital wireless system. It ships with the Beta 58A capsule, a dynamic element that delivers clear, focused vocals by adding a gentle presence boost in the midrange and rolling off excess low end when the mic is held close. The capsule uses a supercardioid pickup pattern, so it favors the voice in front of it and keeps stage noise and feedback under control.

Inside the robust aluminum housing you will find the same feature set touring engineers rely on every night. A backlit LCD shows frequency, battery status, and gain at a glance, while an infrared sync window lets you lock the transmitter to a QLX-D receiver in seconds. Once connected, the system offers 2,560 tunable frequencies across the J50A UHF band, giving you plenty of headroom in crowded RF environments. If security is important, AES 256-bit encryption is built in, keeping corporate or worship events free from prying ears.

The transmitter supports two AA batteries for up to nine hours of operation. You can also drop in the optional Shure SB900 rechargeable pack if you prefer a greener workflow and detailed runtime telemetry. A selectable RF output of 1 or 10 milliwatts lets you choose between maximum range—up to about 330 feet line of sight—or reduced power when several systems are running side by side.

Singers, spoken-word presenters, and emcees will appreciate the discreet mute toggle and the ability to lock frequency or power so accidental bumps do not ruin a performance. Production teams can swap the Beta 58A capsule for any other Shure screw-on head, making the transmitter a flexible piece of kit that adapts as show requirements change.

Whether you are outfitting a touring rig, modern house of worship, conference ballroom, or school auditorium, the QLXD2/B58=-J50A offers the reliability and sound quality that have made Shure a trusted name on stages worldwide.

Highlights:

• Beta 58A capsule delivers a supercardioid pattern and a 50 Hz to 16 kHz response tailored for vocals
• Operates anywhere in the J50A band from 572 to 608 MHz and 614 to 616 MHz with 2,560 selectable frequencies
• AES 256-bit encryption secures the audio link for corporate or worship use
• Selectable 1 or 10 mW RF output supports ranges up to roughly 330 feet line of sight
• Runs up to nine hours on two standard AA batteries; compatible with the optional Shure SB900 pack
• Infrared sync, gain control, mute switch, and frequency or power lockout built into the transmitter
• Accepts any Shure interchangeable microphone capsule through the standard threaded mount