The Audio-Technica ESW-T4102/C510 is a professional Engineered Sound Wireless handheld transmitter designed for conferencing, presentation, and live sound applications requiring exceptional audio quality and operational simplicity. As part of Audio-Technica's DECT-based wireless system, this transmitter overcomes traditional RF challenges such as complex frequency coordination and limited simultaneous microphone counts, making it ideal for multi-microphone environments like boardrooms, legislative chambers, and houses of worship.

The transmitter ships with the ATW-C510 cardioid dynamic capsule, which features a multistage grille design that provides excellent protection against plosives and sibilance without compromising high-frequency clarity. The capsule is fully interchangeable, compatible with Audio-Technica's entire wireless microphone capsule lineup, allowing users to tailor the microphone's polar pattern and element type to specific applications. The robust, all-metal chassis is built for the rigors of daily professional use while maintaining an ergonomic feel for handheld operation.

Powering the ESW-T4102/C510 is a field-replaceable LI-320 lithium-ion battery, providing an impressive 35 hours of continuous operation on a single full charge. The battery can be charged in the ESW-CHG4 charging station (sold separately), which supports simultaneous charging of up to four transmitters. The transmitter features charging terminals compatible with drop-in charging, and the battery is user-replaceable by simply twisting the lower grip section. A slide-to-mute switch provides convenient, instant audio muting without fumbling with console controls.