Dual-muff hard-hat headset mic, TRRS 3.5 mm plug for Digi-Wave DLT 400

The Williams AV MIC 188 is a dual-muff, hard-hat headset microphone designed for communication with the Digi-Wave DLT 400. Its electret, noise-cancelling microphone element, circumaural gel ear cushions, and 3.5 mm stereo TRRS plug combine voice-focused performance with a hard-hat-compatible headset format. A 360-degree strain relief at the plug supports the cable connection during regular use.

Ideal Use Cases

This headset is intended for Digi-Wave DLT 400 users who need a dual-muff microphone configuration while wearing a hard hat. The circumaural cushions surround the ears, while their soft gel construction provides a defined contact surface. The integrated microphone enables two-way voice communication through the connected Digi-Wave unit.

Its specified frequency response of 250 Hz to 4000 Hz is focused on the vocal range used for spoken communication. The noise-cancelling electret element makes the MIC 188 particularly relevant when the microphone must prioritize the wearer’s voice over surrounding sound.

Why Choose This Model

The MIC 188 brings the headset, dual circumaural ear cushions, and microphone together in one hard-hat-oriented design. It connects through a 3.5 mm stereo TRRS plug and is identified specifically for use with the Digi-Wave DLT 400. This stated compatibility makes it a targeted choice for an existing Digi-Wave communication setup.

Key electrical specifications include an impedance of 680 ohms at 1 kHz, a 58 dB signal-to-noise ratio, and 47 dB sensitivity. Rated input power is specified from 60 mW to 100 mW. These documented values make it easier to assess the headset against the requirements of the intended system.

Installation and Integration

Integration centers on the attached 3.5 mm stereo TRRS connector. Connect the plug to the corresponding headset connection on the Digi-Wave DLT 400, ensuring it is fully seated. The plug incorporates 360-degree strain relief, which provides support where the cable meets the connector.

Before use, position the dual circumaural muffs around the ears and adjust the headset for the hard-hat configuration. Position the microphone for spoken communication, then confirm operation through the connected DLT 400. No additional installation accessories or included components are specified in the supplied product information.

Performance Highlights

• Electret, noise-cancelling microphone element for voice communication.
• Frequency response from 250 Hz to 4000 Hz.
• 680-ohm impedance measured at 1 kHz.
• 58 dB signal-to-noise ratio.
• 47 dB sensitivity.
• Rated input power range of 60 mW to 100 mW.
• Soft gel, circumaural ear cushions in a dual-muff design.
• 3.5 mm stereo TRRS plug with 360-degree strain relief.
• Black finish.

The combination of a speech-oriented frequency range and noise-cancelling microphone element defines the MIC 188’s performance profile. Its documented signal-to-noise ratio and electrical specifications provide concrete reference points for evaluating microphone operation.

What Makes It Different

The distinguishing feature of the MIC 188 is its combination of a hard-hat headset format, dual circumaural muffs, and an integrated noise-cancelling microphone. Rather than using a single-ear or standalone microphone arrangement, it provides soft gel cushions around both ears while retaining a direct TRRS connection for the specified Digi-Wave transmitter.

The model also carries WEEE, CE, and RoHS approvals. Its 90-day warranty provides the stated coverage period for the product. Together, these details define a specialized headset built around documented compatibility and a clearly specified audio interface.

Final Assessment

The Williams AV MIC 188 is a focused accessory for Digi-Wave DLT 400 communication where a dual-muff, hard-hat headset is required. Its electret noise-cancelling element, 250 Hz to 4000 Hz response, soft gel circumaural cushions, and strain-relieved 3.5 mm TRRS connector address the essential microphone, fit, and connection requirements in one model. For buyers matching a headset directly to the stated Digi-Wave system, the MIC 188 offers a specification-defined solution backed by a 90-day warranty.