Shure ADX2TA/K9B=-X55 Digital Handheld Wireless Microphone Transmitter with KSM9 Capsule (X55: 941 to 960 MHz, Black) (TAA-Compliant)

Product Overview

The Shure ADX2TA/K9B=-X55 is a TAA-compliant Axient Digital handheld wireless transmitter equipped with the KSM9 switchable-pattern condenser capsule in a black finish, operating in the X55 frequency band (941–960 MHz). This transmitter is designed for US federal government procurement and commercial AV deployments requiring operation in the 900 MHz licensed spectrum, which is largely free from interference caused by TV broadcast signals in the UHF band. It integrates with any X55-band Axient Digital receiver to deliver professional audio performance with enterprise-grade RF management.

Product Description

The X55 band (941–960 MHz) is a licensed frequency allocation that offers a largely interference-free RF environment compared to lower UHF bands in major metropolitan markets, making it a strong choice for government facilities, urban convention centers, and high-density commercial campuses where G57 or K54 spectrum may be congested. The KSM9 condenser capsule provides switchable cardioid and supercardioid polar patterns, enabling system designers to adapt pickup characteristics to specific room acoustics and feedback margin requirements without changing hardware. ShowLink remote control enables real-time parameter management from the mix position via IEEE 802.15.4, and AES 256-bit encryption secures transmission in sensitive deployments. For a G57-band equivalent, see the Shure ADX2TA/K9B=-G57. For a KSM9HS high-sensitivity variant, see the Shure ADX2/K9HSB.

High Density mode reduces channel-to-channel spacing to 125 kHz for maximum simultaneous channel capacity in multi-room deployments. The SB920 rechargeable Li-Ion battery provides up to 9 hours of runtime at 10 mW with precision fuel-gauge metering.

Key Features

• TAA Compliance — Meets Trade Agreements Act requirements for US federal government and GSA schedule procurement without waivers or exceptions.
• KSM9 Switchable-Pattern Condenser Capsule — Cardioid and supercardioid patterns adapt pickup to different room sizes, stage configurations, and feedback situations.
• X55 Frequency Band (941–960 MHz) — Licensed 900 MHz spectrum provides a largely interference-free RF environment in dense urban markets where lower UHF bands are congested.
• ShowLink Remote Control — IEEE 802.15.4 wireless link enables real-time transmitter management from Wireless Workbench without physical access to the microphone.
• AES 256-Bit Encryption — Secures audio transmission for government, legal, and enterprise security applications.
• High Density Mode — 125 kHz channel spacing maximizes simultaneous channel count for large-scale commercial installations.
• Selectable RF Power (2/10/40 mW) — Adjustable power levels balance coverage range with battery runtime for each specific venue.
• SB920 Rechargeable Li-Ion Battery — Up to 9 hours runtime at 10 mW with zero memory effect and networked docked charging support.
• Cast Aluminum Construction — Rugged, lightweight housing built for commercial-grade daily use in live events, government, and conference environments.
• Interchangeable Cartridge System — Compatible with Shure's full wireless capsule lineup for future reconfiguration flexibility.

Typical Applications

• Government space
• Boardroom
• Conference room
• Commercial meeting space
• All-hands room
• Broadcast studio
• House of worship
• Auditorium
• Training room

Technical Specifications

Competitor Comparison

Frequently Asked Questions

What receiver is required for the ADX2TA/K9B=-X55?
This transmitter requires an Axient Digital receiver operating in the X55 band (941–960 MHz). Verify that your receiver model supports the X55 band before ordering.

Is a license required to operate in the X55 band?
The 900 MHz wireless microphone band (941–960 MHz) is licensed spectrum in the US. Users must obtain an appropriate FCC license before operating this transmitter. Work with your AV integrator or a licensed frequency coordinator to identify the correct licensing pathway for your facility.

Is this transmitter eligible for US government procurement?
Yes. The "TA" in the SKU denotes Trade Agreements Act compliance. This transmitter is eligible for US federal contracts and GSA schedule purchases.

Why choose X55 over G57 for a government facility deployment?
In dense urban markets where UHF TV broadcast and other wireless systems create interference in the G57 band, the X55 band (941–960 MHz) may offer a significantly cleaner RF environment. A site RF survey using Wireless Workbench or similar tools can confirm which band is optimal for your specific location.

What is the warranty on this product?
Shure provides a two-year limited warranty on the ADX2TA transmitter body and a one-year warranty on the SB920 battery. Contact your authorized Shure dealer for service information.