Dual headset mic with TRRS 3.5mm plug for DLT 400 transceiver only.

The Williams AV MIC 145 is a dual headset microphone built around a noise-cancelling electret condenser element and a gooseneck boom. Its 3.5 mm TRRS plug has a black plastic housing with strain relief. The product data limits compatibility to the DLT 400 transceiver and identifies the compatible platform as the Digi-Wave 400 Transceiver. This system-specific design combines documented microphone, headset, boom, and connector characteristics in one configuration.

Ideal Use Cases

The MIC 145 is intended for communication through the specified DLT 400/Digi-Wave 400 Transceiver. It is a suitable choice when an existing compatible transceiver requires a dual headset microphone with a 3.5 mm TRRS connection. The gooseneck boom provides an adjustable microphone structure, while the electret condenser element is specified as noise cancelling.

Because the supplied compatibility information is limited to the DLT 400 transceiver, this headset is best selected by system model rather than plug size alone. The product data does not confirm operation with phones, computers, other transceivers, or devices that happen to have a 3.5 mm connection.

Why Choose This Model

The MIC 145 offers a clearly documented set of electroacoustic specifications for buyers maintaining or equipping a Digi-Wave 400 system. Its microphone frequency response extends from 100 Hz to 10 kHz, and the signal-to-noise ratio is rated at more than 60 dB at 1 kHz. Microphone sensitivity is specified as 62 ± 4 dBv/µbar at 1 kHz and 1/4 inch.

The headset section is also defined independently. Its sensitivity is rated at 105 dB SPL typical at 1 kHz with 1 mW on a flat plate coupler, while its DC impedance is 32 ohms typical in stereo. These published values make it possible to identify the exact headset configuration without relying on a generic product description.

Installation and Integration

Integration centers on the 3.5 mm TRRS plug and the supported transceiver. Confirm that the target equipment is the DLT 400/Digi-Wave 400 Transceiver before ordering, then connect the headset through the matching TRRS headset interface. The plug includes a black plastic housing and built-in strain relief as specified in the source data.

The gooseneck boom can be positioned as needed for microphone placement. No alternate connector, adapter, wireless connection, USB interface, or other installation method is identified in the supplied information. This model should therefore be treated as a dedicated accessory for the stated transceiver rather than as a universal 3.5 mm headset.

Performance Highlights

• Microphone element: Electret condenser with a noise-cancelling specification.
• Frequency response: 100 Hz to 10 kHz.
• Signal-to-noise ratio: More than 60 dB at 1 kHz.
• Microphone sensitivity: 62 ± 4 dBv/µbar at 1 kHz and 1/4 inch.
• Headset sensitivity: 105 dB SPL typical at 1 kHz with 1 mW on a flat plate coupler.
• Headset impedance: 32 ohms typical, stereo.
• Boom type: Gooseneck.
• Connector: 3.5 mm TRRS plug with black plastic housing and strain relief.

Together, these specifications describe both the microphone input and headset output portions of the product. The noise-cancelling designation applies specifically to the electret condenser microphone element, while the sensitivity and impedance values document the stereo headset section.

What Makes It Different

The defining characteristic of the MIC 145 is its combination of a dual headset format and compatibility restricted to the DLT 400 transceiver. The product is not presented as a broad cross-platform headset. Its TRRS connector, noise-cancelling electret condenser element, gooseneck boom, and documented 32-ohm stereo headset impedance form a system-specific package.

The listing also provides separate sensitivity figures for the microphone and headset. This distinction gives buyers more concrete information than a general statement about audio performance and helps identify the electrical and acoustic specifications associated with SKU MIC 145.

Final Assessment

For a DLT 400/Digi-Wave 400 Transceiver installation, the Williams AV MIC 145 provides a documented dual headset microphone configuration with a 3.5 mm TRRS plug. Its key specifications include a 100 Hz–10 kHz microphone response, noise-cancelling electret condenser element, gooseneck boom, more than 60 dB signal-to-noise ratio, and 32-ohm typical stereo headset impedance. Buyers considering another device should note that compatibility beyond the stated transceiver is not provided in the source data.