Shure ADX2FDTA/K8B=-G57 Digital Handheld Wireless Microphone Transmitter with KSM8 Capsule (G57: 470 to 616 MHz, Black) (TAA-Compliant)

Product Overview

The Shure ADX2FDTA/K8B=-G57 is a professional Axient Digital frequency diversity handheld wireless microphone transmitter fitted with the KSM8 dual-diaphragm cardioid dynamic capsule in black finish, operating in the G57 frequency band (470–616 MHz). Purpose-built for high-demand commercial AV and broadcast deployments, this TAA-compliant transmitter qualifies for U.S. government and federally-funded education procurement. Frequency diversity technology simultaneously transmits on two independent RF carriers, delivering reliable signal continuity in congested RF environments. AV integrators specifying wireless microphone systems for auditoriums, government spaces, and large-format venues will find the ADX2FDTA/K8B=-G57 a capable and compliant component in any Axient Digital system build.

Product Description

The ADX2FDTA/K8B=-G57 combines the proven resilience of Shure’s Axient Digital platform with the natural, warm response of the KSM8 dual-diaphragm cardioid dynamic capsule in black. The KSM8’s dual-diaphragm design provides a consistent cardioid polar pattern with a natural sound character well-suited for high-SPL stage environments, conference presentations, and broadcast applications where dynamic capture is preferred. ShowLink® 2.4 GHz remote control allows AV operators to adjust gain, mute, and RF parameters in real time from the mix position without physical access to the microphone. With up to 184 MHz of tuning bandwidth across the G57 band, the system accommodates complex multi-channel deployments in spectral-dense venues. Included SB920A rechargeable batteries deliver up to 6.5 hours runtime in frequency diversity mode and up to 9 hours in single-carrier mode. For a comparable Axient-tier option, see also the Shure ADX2FDTA/K8N=-G57 in Nickel.

Key Features

• Frequency Diversity Transmission — Simultaneously broadcasts audio on two independent RF carriers; signal integrity is maintained without interruption even when one carrier encounters interference or fading.
• KSM8 Dual-Diaphragm Cardioid Dynamic Capsule (Black) — Dual-diaphragm construction provides a consistent cardioid polar pattern and natural, detailed sound response suited to demanding stage and broadcast vocal applications.
• TAA-Compliant — Meets Trade Agreements Act requirements for U.S. federal government, DoD, and GSA-funded education procurement.
• ShowLink® Remote Control — Real-time wireless adjustment of transmitter gain, mute, and RF settings via 2.4 GHz from the operator position during live events.
• Up to 184 MHz Tuning Bandwidth — Provides extensive spectrum flexibility across the G57 band (470–616 MHz) for coordinating multiple channels in complex RF environments.
• SB920A Rechargeable Battery System — Two SB920A batteries included; up to 6.5 hours in FD mode, up to 9 hours single-carrier; compatible with Shure networked charging docks.
• Standard and High Density Modes — Supports Standard mode for maximum coverage and High Density mode for highest simultaneous channel count in large venue installations.
• Axient Digital Ecosystem Integration — Works with Axient Digital receivers, Wireless Workbench® 6, and ShureCloud for system monitoring, frequency coordination, and remote management.

Typical Applications

• Government and federal agency presentation spaces (TAA-compliant procurement)
• Auditorium and performing arts center live sound systems
• Broadcast studio vocal reinforcement
• House of worship main stage wireless systems
• Commercial conference room and boardroom AV installations
• All-hands room and multi-purpose room deployments
• Training room and educational facility wireless systems

Technical Specifications

Frequently Asked Questions

What is the difference between the KSM8 Black (K8B) and Nickel (K8N) versions?
Both use the identical KSM8 dual-diaphragm cardioid dynamic capsule with identical audio performance. The only difference is finish: black (K8B) versus nickel (K8N). Selection is typically based on aesthetic preference or stage/installation requirements.

What receivers are compatible with the ADX2FDTA/K8B=-G57?
This transmitter requires Axient Digital receivers operating in the G57 band, such as the AD4D (dual-channel) and AD4Q (quad-channel). Frequency bands must match between transmitter and receiver.

Does this transmitter qualify for government procurement?
Yes. The TAA-compliant designation (TA suffix) means this product satisfies Trade Agreements Act requirements, making it eligible for U.S. federal, DoD, and GSA contract purchases.

How does Frequency Diversity work at the transmitter level?
The ADX2FD transmits the same audio signal simultaneously on two separate RF frequencies. If one carrier experiences interference or a fade, the receiver maintains continuous audio by drawing from the alternate carrier — eliminating the audible dropouts common with single-carrier systems.

Can I replace the KSM8 capsule with a different capsule?
Yes. Axient Digital ADX2FD transmitters accept Shure’s RPW-series wireless capsule adapters, allowing capsule swaps in the field. Consult the Shure capsule compatibility guide for compatible RPW models.