Williams AV MIC 158 – Dual-Muff Headset Microphone for DLT 400

Product Overview

The Williams AV MIC 158 is a dual-muff headset microphone with a single 3.5 mm TRRS plug, designed for the Digi-Wave DLT 400 transceiver. It pairs a unidirectional electret boom microphone with 50 mm dynamic headphone drivers, giving interpreters, tour guides, and intercom users clear two-way audio in one comfortable headset. With both ears covered, it suits Digi-Wave deployments where users need to focus on program or interpretation audio while speaking.

Product Description

The MIC 158 is the standard dual-muff talker headset for Digi-Wave 400 Series systems. Its single TRRS connection carries microphone and headphone signals through the DLT 400's headset jack, eliminating the adapters legacy dual-plug headsets require. That makes it a clean specification choice for interpretation kits, guided tour packages, and staff intercom systems built on the Digi-Wave platform.

The unidirectional electret element delivers a 100 Hz – 12 kHz response with better than 50 dB signal-to-noise ratio, keeping the transmitted voice clear while rejecting off-axis room noise. On the listening side, 50 mm dynamic drivers reproduce 10 Hz – 20 kHz at 32 Ω impedance with up to 96 dB maximum SPL, comfortable headroom for monitoring floor feeds or interpretation channels in active venues. The 42-inch cord reaches belt-worn or tabletop transceivers, and field-replaceable consumables — the WND 058 windscreen and EAR 058 earpads — keep rental and institutional inventories serviceable over time.

Where only one ear should be covered, such as docent tours where guides must stay aware of their group, specify the single-muff MIC 157. For high-noise industrial routes, step up to the MIC 168 or hard-hat MIC 188. Browse Digi-Wave transceivers and accessories in our Williams AV collection.

Key Features

• Single TRRS Connection — One 3.5 mm TRRS plug carries mic and headphone audio directly into the Digi-Wave DLT 400 headset jack with no adapter.
• Unidirectional Electret Microphone — Directional pickup with better than 50 dB signal-to-noise ratio keeps transmitted speech clean in active rooms.
• 50 mm Dynamic Drivers — Full 10 Hz – 20 kHz headphone response with 96 dB maximum SPL provides clear, comfortable monitoring of interpretation or tour audio.
• Dual-Muff Coverage — Both ears are covered so interpreters and operators can concentrate on the program feed without distraction.
• Field-Replaceable Consumables — The WND 058 windscreen and EAR 058 earpads are available separately, extending service life in shared-use inventories.
• Practical 42-Inch Cord — The cable length suits belt-worn transceivers and tabletop interpreter positions alike.
• CE and RoHS Compliant — Certified for commercial deployment with a 90-day manufacturer warranty.

Technical Specifications