Shure QLXD2/KSM9HS Handheld Wireless Microphone Transmitter V50

Shure QLXD2/KSM9HS
The Shure QLXD2/KSM9HS pairs the QLXD2 handheld transmitter with the KSM9HS microphone capsule, delivering transparent 24-bit digital audio alongside highly efficient use of RF spectrum. Designed for performers and audio professionals who need dependable wireless sound, this system is built to handle demanding live and studio environments while keeping setup simple and audio quality consistent. Available in the J50A frequency band, with LED or no status indicator options, the QLXD2/KSM9HS is part of Shure's broader QLX-D digital wireless lineup.

Audio Performance
At the core of the QLXD2/KSM9HS is a commitment to accurate, full-range sound. The system reproduces a 20 Hz to 20 kHz frequency range with a flat response, though actual response depends on the microphone capsule in use. It also offers over 120 dB of dynamic range, which means transmitter gain adjustment isn't necessary — the system captures both quiet passages and loud peaks without distortion or the need for manual tweaking. This wide dynamic range, combined with 24-bit digital audio, gives users studio-quality sound in a wireless handheld format, making it suitable for vocal performance, presentations, or any application where clarity matters.
Flexibility and Security
The QLXD2 transmitter is built around interchangeable Shure microphone capsules, including the legendary SM58, giving users the ability to adapt the same transmitter body to different sonic characteristics or performance needs. On the RF side, users can select between 1 mW and 10 mW output power depending on the operating environment, and the system includes frequency and power lockout to prevent accidental changes during a show. For security, AES 256-bit encryption protects the wireless transmission, ensuring that audio can't be intercepted or compromised — an important feature for corporate, broadcast, or sensitive live-sound applications. Operating range extends up to 100 meters (330 feet) line-of-sight, giving performers freedom of movement without sacrificing signal integrity.
Design and Usability
Practical, everyday usability is built into the QLXD2's design. A backlit LCD screen offers an easy-to-navigate menu and controls, with a selectable display mode that can show group/channel information, frequency, or battery runtime depending on what the user needs at a glance. Power comes from 2 x AA alkaline batteries, providing up to 9 hours of continuous use, or from an optional Shure lithium-ion rechargeable battery that extends runtime to 10 hours and reports remaining battery life in hours and minutes. External charging contacts allow for convenient docked charging, streamlining workflow for touring or venue-based setups. The transmitter itself features rugged metal construction, built to withstand the rigors of frequent handling, travel, and live performance use, making the QLXD2/KSM9HS a durable, professional-grade choice for wireless vocal applications.
Why We Love This
Our gear experts appreciate the QLXD2/KSM9HS for its combination of pristine 24-bit audio and effortless reliability. With over 120 dB of dynamic range, there's no fumbling with gain settings mid-performance. The interchangeable capsule system — including the SM58 — lets performers match their sound to the moment. Rugged metal construction and up to 10 hours of battery life mean it holds up through demanding tours, while AES 256-bit encryption keeps every performance secure from interference or interception.
Features:
- 20 Hz–20 kHz frequency range with flat response
- Interchangeable Shure microphone capsules, including the SM58
- AES 256-bit encryption for secure transmission
- Over 120 dB of dynamic range (no transmitter gain adjustment needed)
- Selectable 1 mW or 10 mW RF output power
- Up to 9 hours of use with 2 x AA alkaline batteries
- Optional Shure lithium-ion rechargeable battery (up to 10 hours, with runtime reporting)
- External charging contacts for docked charging
- Backlit LCD with easy-to-navigate menu and controls
- Frequency and power lockout for performance security