Shure QLXD2/KSM9 Digital Handheld Wireless Microphone Transmitter with KSM9 Capsule (H50: 534 to 598 MHz)

Shure QLXD2/KSM9 Digital Handheld Wireless Microphone Transmitter

Precision Vocal Reproduction for High-End Performance

The Shure QLXD2/KSM9 is a top-of-the-line digital handheld wireless microphone transmitter designed to complement QLX-D receivers. Featuring a dual-diaphragm KSM9 condenser capsule, it excels in capturing intricate sonic details, ensuring precise vocal reproduction for professional live performances.

Versatile Polar Patterns for Varied Environments

The KSM9 capsule offers two switchable polar patterns to cater to diverse needs:

• Cardioid Pattern: Provides solid gain before feedback with minimal off-axis coloration, delivering a warm, full sound.


• Supercardioid Pattern: Offers increased sound isolation and gain before feedback, making it ideal for environments with high ambient noise or multiple closely situated sound sources.

Exceptional Performance and Flexibility

Operating within a 64 MHz UHF tuning range with 2560 selectable frequencies, the QLXD2/KSM9 ensures reliable operation in any setting. It boasts a transmission range of up to 330 feet and offers a selectable 1/10mW RF power output.

Rugged Construction for Reliable Use

Crafted with a rugged yet lightweight aluminum housing, the QLXD2/KSM9 transmitter delivers pristine audio quality and RF performance. AES 256-bit encryption ensures secure transmission, making it suitable for sound reinforcement applications in medium-sized venues, houses of worship, and various A/V installations.

Clear, Accurate Audio with Interchangeable Capsule

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


• KSM9 Capsule: Equipped with dual 3/4” gold-layered, low-mass Mylar diaphragms for a consistent frequency response.


• Class-A Preamplifier: Features a discrete transformerless design for transparency, fast transient response, and minimal crossover distortion.


• Integrated Pop Protection Grille: Reduces plosives, wind noise, and breath sounds.


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

User-Friendly Features for Seamless Operation

• Quick Syncing: Easily syncs with wireless receivers via infrared at the touch of a button.


• Adjustable Input Sensitivity: Accommodates mic levels ranging from booming voices to quiet speech.


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


• Backlit LCD Display: Provides easy access to frequency, group, and channel settings, along with mute and lock status, and RF output.

Convenient Power Management Options

• Long Battery Life: Operates for up to 9 hours on two AA batteries.


• Optional Rechargeable Battery Pack: The Shure SB900A lithium-ion pack offers over 10 hours of battery life, precision metering, and zero memory effect.


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


• Networkable Charger: The SBC220 charger (available separately) allows for remote power monitoring via Shure’s Wireless Workbench software.