Shure AD2TA/SM58=-X55 Digital Handheld Wireless Microphone Transmitter with SM58 Capsule (X55: 941 to 960 MHz) (TAA-Compliant)

Product Overview

The Shure AD2TA/SM58=-X55 is a TAA-compliant Axient Digital handheld wireless microphone transmitter with the SM58 dynamic cardioid capsule, operating in the X55 frequency band (941–960 MHz). Designed for commercial AV deployments requiring government procurement compliance, this transmitter operates in the 900 MHz upper UHF range—a band useful in regions where lower UHF spectrum is congested or restricted. It delivers AES-256 encrypted wireless audio, High Density mode support, and the full Axient Digital RF platform in a TAA-compliant package suited to government facilities, commercial meeting spaces, and production environments.

Product Description

The AD2TA/SM58=-X55 targets integrators and procurement teams that need reliable wireless microphone performance in the 941–960 MHz X55 band with TAA compliance. The SM58 dynamic cardioid capsule handles maximum input SPL of 145 dB at 1 kHz, making it appropriate for high-volume vocal and live event applications where robustness and noise rejection are priorities. Operating power is selectable at 2, 10, or 35 mW, providing flexibility from high-density short-range deployments to standard coverage in larger commercial spaces. AES-256 encryption secures audio transmission, and High Density mode enables up to 47 active channels per 6 MHz TV band for high-channel-count commercial installations. The transmitter accepts standard 2× AA batteries for up to 8 hours of runtime or the Shure SB900C rechargeable battery for up to 11 hours.

See also the Shure ADX2/B58 — the ADX-series Axient Digital transmitter with Beta 58A capsule and ShowLink remote control.

Key Features

• TAA Compliance — Qualifies for GSA Schedule and federal contract procurement under the Trade Agreements Act without additional waivers.
• X55 Band (941–960 MHz) — Upper UHF operation at 941–960 MHz provides an alternative spectrum option in markets where lower UHF bands are congested; always verify local licensing requirements before deployment.
• SM58 Dynamic Cardioid Capsule — Handles up to 145 dB SPL at 1 kHz, requires no phantom power, and delivers consistent cardioid polar response for live vocal applications.
• AES-256 Encryption — Hardware-level encryption prevents unauthorized monitoring of audio transmissions, meeting security standards for government and enterprise deployments.
• High Density (HD) Mode — Narrows channel spacing to 125 kHz to support more concurrent active channels in spectrum-constrained environments.
• >120 dB Dynamic Range — Full Axient Digital dynamic range regardless of capsule, ensuring clean, artifact-free audio.
• Selectable RF Power (2/10/35 mW) — Three power levels enable optimization of coverage range, battery life, and spectral density per deployment requirements.
• Up to 11-Hour Battery Runtime — SB900C rechargeable lithium-ion battery or standard 2× AA alkaline, with external charging contacts for docked recharging.
• 100m Line-of-Sight Operating Range — Provides reliable RF coverage across commercial and institutional spaces when paired with Axient Digital receivers.
• Interchangeable Cartridge — Capsule swaps tool-free to any Shure AD-series RPW replacement cartridge for system flexibility.
• Cast Aluminum Housing with Lockable Controls — Rugged construction with menu and power lockout prevents unauthorized changes during deployment.

Typical Applications

• Government facilities requiring TAA-compliant wireless microphones in upper UHF spectrum
• Live event production in markets where X55 band spectrum is available
• Commercial conference rooms and multi-purpose spaces with spectrum constraints in lower UHF
• Auditorium and house of worship vocal reinforcement
• Broadcast studio and production environments needing encrypted RF audio
• All-hands rooms and training room deployments

Technical Specifications

Frequently Asked Questions

Which receivers are compatible with the AD2TA/SM58=-X55?
This transmitter is compatible with all Shure Axient Digital AD and ADX series receivers (AD4D, AD4Q, ADX4D) operating in the X55 frequency band. Always match transmitter and receiver band before deploying.

What licensing is required for the X55 band?
X55 band (941–960 MHz) operation may require FCC Part 74 licensing in the US depending on application. Consult your local telecommunications authority and verify spectrum availability in your deployment area before purchasing. Shure strongly urges users to contact the appropriate authority concerning proper licensing.

Why choose the SM58 capsule for wireless applications?
The SM58 is a dynamic cardioid capsule that handles up to 145 dB SPL, requires no phantom power, and is extremely resistant to handling noise and rough use—making it the standard for live vocal applications and high-SPL environments where condenser capsules may be impractical.

What does TAA compliance mean for procurement?
TAA compliance enables purchase through GSA Schedules and federal contract vehicles requiring Buy American compliance, covering government and institutional AV deployments.

Can the capsule be swapped in the field?
Yes. Any Shure AD-series RPW replacement cartridge installs tool-free. Compatible options include SM58 (RPW112), Beta 58A (RPW118), KSM9HS Nickel (RPW190), and VP68 (RPW124).

What warranty applies?
Shure provides a two-year limited warranty on the AD2 transmitter body. Contact Shure support or your authorized dealer for service and RMA procedures.