Shure AD651B-TA Talk Switch for ADX2 and ADX2FD Handheld Transmitters (TAA-Compliant)

Product Overview

The Shure AD651B-TA is a TAA-compliant, black-finish screw-on talk switch for Axient Digital ADX2 and ADX2FD handheld wireless transmitters. It adds a tactile push-and-hold button to the transmitter body, enabling remote audio routing control at the AD4 receiver — a critical feature in broadcast, live event, and government AV deployments where talent or presenters need on-mic control without touching the audio system directly. TAA compliance makes this accessory eligible for US government procurement under the Trade Agreements Act.

Product Description

Adding the AD651B-TA talk switch to Axient Digital ADX2 or ADX2FD handheld transmitters gives the presenter or talent push-button control over audio output routing at the connected AD4 receiver. To activate audio routing, press and hold the talk switch button — releasing the button returns routing to its default state. The black finish matches the ADX2 transmitter body for a clean, professional appearance on stage or at the lectern. As a TAA-compliant accessory, the AD651B-TA is suitable for government, military, and federally funded AV system procurements that require TAA-eligible components. The AD651B-TA is compatible with all ADX2 and ADX2FD transmitter configurations, including those fitted with B58, B87A, B87C, K8, K9, K9HS, and SM58 capsules.

Key Features

• Screw-On Installation — Attaches directly to the ADX2 or ADX2FD handheld transmitter body; no tools required for installation or removal, supporting fast rental or touring setups.
• Push-and-Hold Activation — Press and hold the talk switch button to activate remote audio routing at the AD4 receiver; release to return to default state, giving talent intuitive on-mic control.
• TAA Compliant — Meets Trade Agreements Act requirements, qualifying this accessory for US federal government, military, and GSA-schedule AV procurement.
• Black Finish — Matches standard ADX2 transmitter body color for a professional appearance in broadcast, live event, and commercial AV applications.
• Broad Capsule Compatibility — Works with ADX2 and ADX2FD transmitters across all capsule configurations including Beta 58A, Beta 87A, Beta 87C, K8, K9, K9HS, and SM58 capsule variants.
• Axient Digital Integration — Designed specifically for the Axient Digital wireless system, enabling the advanced audio routing capabilities of the AD4 receiver platform at the transmitter level.

Typical Applications

• Government space
• Broadcast studio
• House of worship
• Auditorium

Technical Specifications

Frequently Asked Questions

What does the AD651B-TA actually do at the receiver?
When the talk switch button is pressed and held, it sends a signal to the connected AD4 receiver to activate remote audio routing — for example, sending the transmitter’s audio to an alternate output or triggering a preset routing configuration. The exact routing behavior is configurable in Axient Digital Wireless Workbench or ShurePlus Channels software.

Is the AD651B-TA compatible with all ADX2 capsule options?
Yes. The AD651B-TA is compatible with ADX2 and ADX2FD transmitters fitted with B58, B87A, B87C, K8, K9, K9HS, and SM58 capsule options. It screws onto the transmitter body regardless of the installed capsule.

What is the difference between AD651B and AD651B-TA?
The AD651B-TA is the Trade Agreements Act (TAA) compliant version of the AD651B. Both products are functionally identical; the -TA designation qualifies the accessory for US government, military, and federally funded procurement programs.

Can the AD651B-TA be used on non-Axient transmitters?
No. The AD651B-TA is a proprietary accessory designed exclusively for Axient Digital ADX2 and ADX2FD handheld transmitters. It is not compatible with SLX-D, ULX-D, or other Shure wireless transmitter platforms.

Does the talk switch affect audio quality or RF performance?
No. The talk switch is a mechanical accessory that does not alter the transmitter’s RF output or audio signal chain. It adds a control button to the transmitter body without impacting wireless range or audio performance.