ESW Body-Pack Transmitter


Simple, Smart, Scalable Wireless

  • Built-in high-quality microphone
  • Transmitter neck strap included
  • Simple single-button operation
  • Lightweight design
  • Long-lasting battery for all-day operation
  • Compact, sweat-resistant cH-type connectors for use with a variety of Audio-Technica microphones
  • Two built-in antennas for stable operation

    The demand for wireless microphones has grown as a result of the increasing prevalence of videoconferencing and web conferencing. Audio-Technica’s Engineered Sound Wireless Systems is a DECT wireless system that offers simple, smart, and scalable high-quality audio. This system overcomes many challenges of conventional wireless microphones, such as frequency coordination and the limited number of simultaneous microphones.

    Operation is incredibly easy for end users, with microphones ready to use by simply removing them from the charging station. At full charge, the batteries offer all-day operation. Installation is also made easy using PoE to power the receiver and Dante audio output capabilities. Wiring is as simple as connecting a single Cat 5e cable to a PoE switch. This helps streamline the installation process, with no need to worry about having to install multiple antennas. System integrators are able to configure detailed settings to meet a wide variety of end-user needs.

    Seamless setup and management are controlled via Audio-Technica’s Wireless Manager software, which is capable of managing multiple wireless systems, including UHF wireless systems, from a single screen. In addition, AES256 encryption support comes standard, providing superior security and reliable operation.

  • ESW-T4101 Specifications

    Frequency Response

    20 to 18,000 Hz

    Modulation Mode

    A-field: π/2-BPSK
    B-field: π/4-QPSK

    Input Connections

    cH-style screw-down 4-pin connector
    Pin 1: GND;
    Pin 3: MIC INPUT;
    Pin 4: DC BIAS +5V

    Battery Type

    Lithium-ion battery LI-220 (included)

    Operating Temperature Range

    -5°C to 45°C

    Battery Current / Life

    25hr (Depending on usage conditions)


    56mm × 23.5mm × 90mm (W × D × H)


    112.3g (with battery)

    Accessories Furnished

    Neck strap

    LI-220 Lithium-ion Battery Specifications


    Lithium ion

    Output Voltage

    3.6V DC




    39.7mm × 56.7mm × 13.5mm (W × D × H)




    audio technica support ESW-T4101_Dimensions.dwg - ESW-T4101 Appearance (DWG)
    audio technica support ESW-T4101_Dimensions.pdf - ESW-T4101 Appearance (PDF)