Sound Devices A20-TX Switch

Reliable Bolt-Action Control for A20-TX Transmitters
The Sound Devices A20-TX Switch is a physically removable, bolt-action switch designed for the A20-TX digital wireless transmitter. This optional accessory adds an intuitive, tactile control point that can be configured for a range of functions including mute, power, and record—without needing to fumble through menus or screens. Built for productions that require on-talent control, the A20-TX Switch offers dependable functionality and a satisfying, secure feel.

Magnetically Sensed with Physical Feedback
This switch is not just about convenience—it’s engineered for precision and confidence. It uses magnetic sensing for activation, paired with a spring-loaded bayonet mount for easy attachment and removal. The bolt-action movement provides clear tactile feedback, making it easy to operate by touch in low-light or fast-moving environments such as live events, broadcast, or theater.

Customizable Functions Based on Your Workflow
You can assign the A20-TX Switch to trigger key actions on the transmitter. Whether it’s toggling the transmitter on and off, engaging mute, starting or stopping recording, or activating macros, the switch offers flexibility tailored to the production's needs. These settings can be configured through the A20-TX transmitter menu or remotely via compatible Sound Devices Astral receivers like the A20-Nexus and A20-Nexus Go.

Built to Withstand Professional Use
Constructed from rugged materials, the A20-TX Switch is made to handle the physical demands of fieldwork. It’s designed for durability without sacrificing weight or bulk, maintaining the streamlined form factor of the A20-TX system. Whether clipped to costumes, hidden in props, or worn by talent, the switch ensures consistent performance and long-term reliability.

Quick Installation and Removal
The bayonet-style connection allows users to securely attach or remove the switch from the A20-TX without tools. This makes it easy to adapt to different setups or swap out for another configuration mid-production. It also simplifies maintenance and storage between uses.

An Ideal Add-On for Film, Theater, and Broadcast
For productions that demand talent-controlled input or quick on-body adjustments, the A20-TX Switch is an ideal solution. It reduces dependence on wireless commands or physical access to the transmitter, which is especially valuable when gear is concealed under clothing or hard to reach during takes.