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Sennheiser 505772 HMD 26-II-100-8 Broadcast Headset 100 Ohm — main product image
Sennheiser

Sennheiser 505772 HMD 26-II-100-8 Broadcast Headset 100 Ohm

★★★★★3.1 (3 reviews)

Sennheiser's broadcast-grade clarity and active noise cancellation deliver intelligible communication even in the loudest production environments.

$579.00*
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*Price sourced from Amazon.com. Last updated:Jun 03, 2026.Price and availability are subject to change.

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Overview

The Sennheiser HMD 26-II-100-8 is built for one thing above all: keeping communication clean when the environment is anything but. Whether you're working a live sports broadcast, a theatrical production with heavy stage wash, or a busy television studio floor, this headset's active noise cancellation ensures that every word from the director or stage manager cuts through with precision. The microphone capsule's characteristic Sennheiser tonal profile — clear upper-mid presence, controlled low-end — means your voice sits intelligibly in the mix without fighting the room.

The all-steel construction speaks to a headset designed for shared use across shifts and productions, and the 100 ohm impedance makes integration with any professional broadcast console or intercom beltpack straightforward. The unterminated cable is a mark of genuine professional intent — it assumes you're wiring it into a real facility, not plugging into a consumer audio interface. Under session pressure, the HMD 26-II-100-8 holds up as reliable infrastructure, the kind of headset you stop thinking about because it simply works every time you put it on.

Specifications

Brand
Sennheiser
Model
505772 / HMD 26-II-100-8
Impedance
100 Ohm
Frequency Range
20 Hz – 20,000 Hz
Connectivity
Wired
Cable Length
6.6 ft (unterminated)
Earpiece Shape
On-ear
Noise Control
Active Noise Cancellation
Material
Steel
Color
Black

Pros & Cons

👍 Pros

  • Active noise cancellation keeps director cues and talkback intelligible in high-SPL broadcast and live event environments.
  • 100 ohm impedance matches standard broadcast console and intercom outputs without requiring additional gain to reach comfortable monitoring levels.
  • Unterminated cable allows custom termination, making integration into any facility's specific connector standard clean and permanent.
  • Sennheiser's broadcast microphone capsule delivers consistent, clear voice capture with controlled proximity effect for close-mic talkback use.
  • Steel construction withstands the daily physical abuse of on-set and live production environments where headsets are frequently passed between crew.

👎 Cons

  • The on-ear design transmits more ambient noise than over-ear alternatives in environments where ANC alone isn't sufficient to fully isolate.
  • The unterminated cable is a professional advantage but requires additional labor and connector cost before the headset can be deployed — not plug-and-play out of the box.
  • At 6.6 feet, the cable length may be restrictive for broadcast positions that require more freedom of movement around a desk or EFP rig.
  • No inline volume control or remote level adjustment is included, requiring gain changes at the console or beltpack.

Frequently Asked Questions

No phantom power is required — the headset is purely passive on the earphone side, and the dynamic microphone capsule does not need external power. It connects directly to any standard broadcast console or intercom system with a compatible input impedance.
An unterminated cable means the 6.6-foot cable ends without a pre-attached connector, giving you or your facilities engineer full control over the termination. You can solder the connector appropriate to your console, intercom system, or patch bay — XLR, 5-pin DIN, or otherwise.
The ANC on this headset is engineered specifically for broadcast contexts where ambient noise is high — crowd noise, stage wash, PA bleed. It attenuates environmental sound so that talkback and director cues remain intelligible without requiring you to crank monitor levels dangerously high.
100 ohms is the industry standard impedance for professional broadcast headsets and aligns well with the headphone outputs found on most broadcast consoles, intercom beltpacks, and production monitoring systems. You'll drive it cleanly without impedance mismatch coloration.
It can be used as a monitoring and communication headset in those contexts, but it's optimized for broadcast talkback and intercom use rather than critical listening. The on-ear design and ANC prioritize communication clarity over flat reference monitoring.

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