Sennheiser HD 300 PROtect Closed-Back Active Gard Studio Monitor Headphones

Sennheiser HD 300 PROtect Closed-Back Active Gard Studio Monitor Headphones

Sennheiser HD 300 PROtect Closed-Back Active Gard Studio Monitor Headphones

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Expected availability: 7-14 business days

Product Highlights

  • Precision-Diaphragm Dynamic Drivers
  • Circumaural, Sound-Isolating Design
  • Switchable Peak Level Protection
  • Up to 32 dB of Passive Noise Isolation
  • 6 Hz to 25 kHz Frequency Response
  • Thick Ear Cushions & Headband Padding
  • Foldable for Compact Storage
  • Detachable 4.9' Single-Sided Cable
  • 3.5mm Stereo Mini Jack
  • Includes 1/4" TRS Adapter
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Configuration: With Active Gard Level Protection

Standard With Active Gard Level Protection
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Sennheiser HD 300 overview

  • 1Description

The Sennheiser HD 300 PROtect are closed-back, over-ear studio monitor headphones offering high-resolution audio reproduction and switchable peak level protection for musicians, audio engineers, and event staff in broadcast, studio, and live stage applications. The precision-diaphragm dynamic drivers produce a wide frequency response of 6 Hz to 25 kHz with low distortion and a maximum SPL of 123 dB. Switch on the Active Gard hearing protection technology to limit levels above 110 dBA for safe listening even with unpredictable source volumes. The HD 300 PROtect's circumaural, closed-back design provides up to 32 dB of passive isolation from ambient noise.

Thick ear cushions and headband padding ensure comfortable wearing for long listening sessions. The detachable 4.9' single-sided cable is terminated with a 3.5mm stereo mini jack, and may be swapped for other Sennheiser modular cables (available separately). A 1/4" TRS adapter is included to allow easy connectivity with mixers, dedicated headphone amplifiers, and audio interfaces. The HD 300 PROtect headphones fold for compact storage and transport.

Complies with European EC industrial safety and noise control standards
Safeguards hearing and presence of mind for listeners
Switchable Active Gard technology attenuates signals above 110 dB down to a safe level while maintaining clear, distortion-free sound
Sensitive transducers, precision diaphragms, and a 6 Hz to 25 kHz frequency response provide neutral, high-resolution audio reproduction
Soft, cushioned viscoelastic earpads and headband padding ensure consistent comfort for long sessions
Closed-back, over-ear design delivers up to 32 dB of ambient noise attenuation
Detachable single-sided cable features a 3.5mm stereo mini jack
Includes 1/4" TRS adapter
In the Box
Sennheiser HD 300 PROtect Closed-Back Active Gard Studio Monitor Headphones
  • 4.9' Headphone Cable
  • 1/4" Adapter
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    Sennheiser HD 300 specs

    Driver Type Dynamic
    Design Over-Ear (Circumaural)
    Earcup Style Closed-Back
    Frequency Response 6 Hz to 25 kHz
    Sensitivity 108 dB at 1 kHz
    Impedance 64 Ohms
    Maximum Sound Pressure Level (SPL) 123 dB at 1 kHz
    Maximum Power Handling 500 mW
    Total Harmonic Distortion (THD) 0.1%
    Active Noise Cancellation No
    Noise Attenuation Up to 32 dB
    Volume Limiting 110 dB
    Foldable Yes
    Contact Pressure 6 N
    Audio Connector 1/8" (3.5 mm) TRS Straight
    Adapter (Included) 1/4" (6.3 mm) TRS
    Connector to Earpiece 1 x Proprietary
    Design Single-Sided
    Color Black
    Detachable Yes
    In-Line Remote/Microphone No
    Cable Length 4.92' / 1.5 m (Unbalanced)
    Weight 10.48 oz / 297 g without Cable

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