Shure QLXD2/KSM9B G51

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Shure QLXD2/KSM9B G51

Shure

QLXD2/KSM9B G51

4.5 Expert Rating

Product Info

Article Number: 585735
Brand: Shure
Model: QLXD2/KSM9B G51
Category: Transmitters
Price: $1,197.90

* Prices may vary. Check retailer for current pricing and availability.

This Shure QLXD2/KSM9B G51 is a serious step up for vocalists needing professional, reliable wireless. The KSM9 capsule sounds fantastic—bright and articulate without being harsh—and the digital transmission is rock-solid. Perfect for touring artists, presenters, or anyone needing top-tier wireless performance in demanding environments.

Product Description

  • Shure QLXD2/KSM9B G51
  • Digital UHF Handheld Transmitter
  • Frequency band: G51 (470 - 534 MHz)
  • with SM9 condenser capsule
  • 24 Bit / 48 kHz audio signal
  • AES-256 encryption for tap-proof transmission
  • Up to 72 MHz switching bandwidth
  • 22 Compatible channels in an 8 MHz TV band
  • Switchable transmission power: 1/10 mW
  • 120 dB Dynamic range
  • Metal handheld transmitter with KSM9 condenser microphone capsule
  • Polar pattern switchable: cardioid/supercardioid
  • Frequency transmission via infrared interface
  • Transmitter operation with 1.5 V AA batteries - optionally also with SB 900A lithium-ion battery
  • Includes bag and microphone mount
PROS
  • • KSM9 capsule delivers exceptional clarity and detail across the spectrum.
  • • Robust metal build feels incredibly solid and durable for stage use.
  • • AES-256 encryption provides genuinely secure, interference-free transmission.
  • • Wide 72 MHz bandwidth allows for flexible channel selection and frequency agility.
CONS
  • • The unit is relatively heavy compared to lighter, consumer-grade wireless systems.
  • • The G51 band's availability can be limited in densely populated areas.
  • • Requires careful frequency coordination in environments with many wireless mics.

Product Video

Key Features

Type Digital UHF Handheld Transmitter
Frequency Band 470 - 534 MHz (G51)
Channels 22
Power 1/10 mW
Battery Life Up to 8 hours with AA batteries (or longer with SB 900A)
Connector Infrared Interface

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Frequently Asked Questions

The system uses an infrared interface to sync with a receiver; it's relatively simple but requires understanding of frequency band management to avoid interference.
Yes, the SB 900A is rechargeable, offering significantly extended runtime—often exceeding 10 hours—and eliminates the need for disposable AA batteries.
The QLXD2 offers a higher dynamic range (120 dB) and AES-256 encryption, providing superior audio fidelity and security compared to some older Shure models.

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