HMD 300

Article No. 700315

The ergonomic HMD 300 professional broadcast headsets excel in the energy and volume of backstage broadcasting environments. Featuring a comfortable, closed circumaural design, switchable ActiveGard© limiting technology, reduced structure-born noise, and a dynamic boom microphone that can be worn on the right or left side, they provide ideal performance at an exceptional value.

The HMD 300 broadcast headsets offer clear communication, even in high-volume backstage environments. A closed circumaural design offers a frequency response of 60 Hz to 25 kHz for clear audio reproduction, while ActiveGard© limiting technology intelligently shields against sudden audio bursts. A dynamic boom microphone combines a super-cardioid polar pattern and structure-borne noise decoupling with the flexibility to be worn on either side, while a split headband alleviates pressure for long-term use.

Features⁰⁹

Dual-sided earcup design ideal for noise isolation and enhanced immersion applications  
Comfortable, single-sided design ideal for dynamic communication environments 
Dynamic super-cardioid microphone for clear communication in noisy environments 
Switchable ActiveGard© limiting technology for protection of noise peaks <110 dB 
Switchable microphone boom for left- or right-side configuration 
Linear sound reproduction for optimized for speech intelligibility 
Comfortable padding allows for extended use in long wearing sessions 
Closed passive earcup construction for superior ambient noise attenuation in loud environments 
Foldable earcup design for easy, space-saving storage

Top Specs

Weight (g)320 g (without cable)
Max. sound pressure level123 dB SPL (ActiveGard off)
Transducer principledynamic, closed (Headphones) | dynamic (Microphone)
Wearing styleOver-ear

Tech Specs

Product

Transducer principle
dynamic, closed (Headphones) | dynamic (Microphone)
Total harmonic distortion (THD)
< 0.1 % @ 1 kHz, 100 dB SPL
Wearing style
Over-ear

Frequency Specifications

Frequency response
60 Hz - 25,000 Hz (Headphones) | 40 Hz - 18,000 Hz (Microphone))
Audio frequency response
60 Hz - 25,000 Hz (Headphones) | 40 Hz - 18,000 Hz (Microphone))

Acoustic Properties

ActiveGard®
110 dB SPL @ 1 kHz
Max. sound pressure level
123 dB SPL (ActiveGard off)

Connectivity

Connection
Wired

Ambient Conditions

Temperature range
-15 °C to +55 °C (Operation) | -40 °C to + 70 °C (Storage)
Operating temperature (C)
-15 °C to +55 °C (Operation) | -40 °C to + 70 °C (Storage)

Battery & Power