Shure QLXD2/KSM9 Digital Handheld Wireless Microphone Transmitter with KSM9 Capsule (V50: 174 to 216 MHz)

Shure QLXD2/KSM9 Digital Handheld Wireless Microphone Transmitter

High-End Live Performance Solution

The Shure QLXD2/KSM9 is a premier digital handheld wireless microphone transmitter, designed for seamless integration with QLX-D receivers. Equipped with a dual-diaphragm KSM9 condenser capsule, this transmitter captures sonic nuances with superior detail, providing precise vocal reproduction ideal for high-end live performances.

Flexible Polar Patterns for Optimal Sound Control

The KSM9 capsule features two switchable polar patterns, offering FOH engineers versatile options to adapt to various performance environments and techniques:

• Cardioid Pattern: Delivers solid gain before feedback and minimal off-axis coloration, resulting in a warm, full sound.


• Supercardioid Pattern: Provides increased sound isolation and higher gain before feedback, perfect for settings with high ambient noise or multiple close-proximity sound sources.

Wide Frequency Range and Robust Performance

Operating on a 44 MHz UHF tuning range with 1760 selectable frequencies, the QLXD2/KSM9 ensures reliable performance. It offers up to 9 hours of operation on two AA batteries and a transmission range of up to 330 feet, with selectable 1/10mW RF power output.

Durable and Secure Design

With a rugged yet lightweight aluminum housing, the QLXD2/KSM9 is built to withstand the rigors of live performance. It also features AES 256-bit encryption, ensuring secure transmission.

Clear and Accurate Audio Reproduction

• 24-bit/48 kHz Digital Audio: Provides clear and reliable audio.


• KSM9 Capsule: Dual 3/4” gold-layered, low-mass Mylar diaphragms ensure a consistent frequency response.


• Class-A Preamplifier: Discrete transformerless design for transparency and fast transient response, eliminating crossover distortion.


• Three-Stage Pop Protection Grille: Reduces plosives, wind noise, and breath sounds.


• Interchangeable Capsule Design: Easily replace the KSM9 capsule with other Shure capsules such as SM58, SM87A, Beta 58A, Beta 87C, and KSM8.

User-Friendly Features

• Infrared Sync: Quickly syncs with a wireless receiver at the touch of a button.


• Adjustable Input Sensitivity: Accommodates a range of mic levels from loud voices to quiet speech.


• Lockout Functions: Prevent accidental or unauthorized changes during events.


• Backlit LCD Display: Easy-to-navigate menu and controls for quick access to frequency, group, channel settings, mute and lock status, and RF output.


• Selectable RF Output Power: Choose between 1mW and 10mW to optimize the transmitter's range or the number of mics operating simultaneously.

Power Management Options

• Standard AA Batteries: Provides up to 9 hours of operation.


• Shure SB900A Rechargeable Battery Pack: Offers intelligent power management with over 10 hours of battery life, precision metering, and zero memory effect.


• External Charging Contacts: Allow for docked battery charging with the SBC200 dual-docking charger (available separately).


• Networkable SBC220 Charger: Enables remote power monitoring via Shure’s Wireless Workbench software.

The Shure QLXD2/KSM9 is perfectly suited for sound reinforcement applications in medium-sized venues, houses of worship, as well as A/V installations in conference, educational, and corporate facilities.