Shure A400MB Mute Button and Adapter

Product Overview

The Shure A400MB is a programmable mute button and adapter that adds local touch-mute control to Microflex low-profile boundary and modular gooseneck microphones. It is designed for conference room and boardroom installations using the MX395-LED boundary microphone and the MX405, MX410, and MX415 modular gooseneck microphones, giving participants a clear, tactile mute at the table. For AV integrators deploying Microflex table microphones, the A400MB is the manufacturer's mute-control accessory.

Product Description

The A400MB installs like a washer between the microphone body and the table surface, with the control circuitry hidden beneath the table for a clean conference table appearance. It converts the microphone's 5-pin XLR output to a standard block connector for no-solder termination, simplifying installation for the integrator. The mute circuitry draws from the same 48-volt phantom power that energizes the microphone, so no separate power supply is required. Muting behavior is programmable through onboard switches: the button can be configured for momentary action (push-to-talk or push-to-mute) or toggled action (push-on, push-off), letting the integrator match the control to the meeting workflow. This makes the A400MB well suited to boardrooms, conference rooms, government spaces, and training rooms where participants need a reliable, visible way to mute at their seat. Because it integrates directly with the existing Microflex microphone and table wiring, it adds mute capability without redesigning the audio system. The A400MB is a model-specific accessory for the supported Microflex low-profile and modular gooseneck microphones.

Key Features

• Programmable Mute Action — Onboard switches configure the button for momentary (push-to-talk or push-to-mute) or toggled (push-on, push-off) operation to match the meeting workflow.
• Phantom-Powered — The mute circuitry is powered by the same 48-volt phantom power that energizes the microphone, so no separate supply is needed.
• No-Solder Termination — Converts the 5-pin XLR output to a standard block connector for hassle-free, no-solder installation.
• Concealed Installation — Installs like a washer between the microphone and table, with control circuitry hidden beneath the surface for a clean appearance.
• Microflex Compatibility — Adds touch-mute to the MX395-LED boundary microphone and MX405, MX410, and MX415 modular gooseneck microphones.
• Integrator Friendly — Adds local mute control without redesigning the existing conference audio system.

Typical Applications

• Boardroom
• Conference room
• Huddle room
• Government space
• Training room
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

Which microphones does the A400MB work with?
It adds mute control to the Shure Microflex MX395-LED low-profile boundary microphone and the MX405, MX410, and MX415 modular gooseneck microphones.

Does the A400MB need its own power supply?
No. The mute circuitry is powered by the same 48-volt phantom power that energizes the microphone.

Can the button work as push-to-talk?
Yes. Onboard switches let you configure momentary action (push-to-talk or push-to-mute) or toggled action (push-on, push-off).

How is it installed at the table?
It installs like a washer between the microphone body and the table surface, with the control circuitry hidden beneath the table. The 5-pin XLR output is converted to a standard block connector for no-solder termination.

Is it covered by a warranty?
Shure accessories are covered under Shure's standard manufacturer warranty. Contact Creation Networks for current warranty and support details on this item.