Shure QLXD2/KSM9HS Wireless Handheld Microphone Transmitter

The Shure QLXD2/KSM9HS=-J50A is a wireless handheld microphone transmitter that captures vocals with precision while giving engineers flexible control over polar response. At its core is the KSM9HS capsule, a dual-diaphragm design that lets you switch between hypercardioid and subcardioid patterns. Singers can tighten the pickup to tame loud stage wedges, or open it slightly for a more relaxed feel when working farther from the mic.

The transmitter delivers 24-bit digital audio across a range of up to 100 meters, so every lyric or spoken word arrives at the receiver with the same clarity you hear at the capsule. AES 256-bit encryption keeps the signal private, a benefit for corporate keynotes, houses of worship, and any situation that demands secure transmission.

An aluminum housing built for durability stands up to touring and rental use, yet the transmitter remains light enough for long sets. One touch of the IR sync button locks it to a compatible receiver in seconds, and the backlit LCD shows frequency, battery life, and menu options even under dim stage lighting.

Power comes from two AA batteries that provide up to nine hours of operation, enough for rehearsals, sound checks, and the show itself. When longer days call, you can swap in an optional Shure rechargeable battery and monitor its runtime in precise increments from the stage or the receiver.

Whether you are a front-of-house engineer working festival stages, a worship leader who needs consistent tone week after week, or a presenter who values freedom of movement, this transmitter offers a reliable path to clear, natural sound.

• 24-bit digital audio for clear, natural sound
• Dual-diaphragm KSM9HS capsule with switchable hypercardioid or subcardioid patterns
• Operating range up to 330 ft / 100 m
• AES 256-bit encryption for secure transmission
• Runs up to nine hours on two AA batteries; compatible with optional Shure rechargeable battery
• Aluminum housing built to handle demanding live use
• One-touch IR syncing with compatible receiver
• Backlit LCD provides quick access to settings and runtime information