SKU: HD300PROTECT Category:


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Sennheiser HD300 PROtect

The Sennheiser HD300 PROtect combines advanced protection from peak levels with incredibly detailed sound and an exceptionally high level of wearing comfort. This makes it a reliable tool for demanding productions.

HD 300 PROtect. The healthy way to hear more.

ActiveGard limiting system protects your hearing

In live sound and studio recording applications, unexpected signal spikes can damage your hearing while you’re monitoring. To protect your ears, Sennheiser’s ActiveGard technology is ready and waiting to limit incoming audio to suppress signal spikes that exceed safe monitoring levels. When the incoming audio falls back into a safe range again, ActiveGard goes back into standby mode.

Collapsible high-end headphones for the pros

The HD 300 PROtect headphone are collapsible high-end headphones ideal for professional monitoring use. They offer a closed circumaural design which provides excellent passive attenuation of ambient noise. And they’re designed to cut through even in loud environments, perfect for use onstage and for studio recording applications.

Built for comfort and accuracy

These monitoring headphones also provide an extended frequency response with increased sound pressure level (up to 123dB) for accurate sound reproduction in all kinds of demanding use. Not only that, but the lightweight and secure-fit design also offers a very comfortable listening experience over long sessions.

  • Switchable ActiveGard to protect hearing for sound pressure levels above 110 dB
  • Highest resolution due to accurate and linear sound reproduction
  • Comfortable padding design allows for extended use in long wearing sessions
  • Superior ambient noise attenuation in loud environments due to closed passive earcup construction
  • Perfect companion for your daily work due to long lasting materials and exchangeable cables with Sennheiser’s established system connector


Transducer principle (headphones): dynamic, closed

Ear coupling: circumaural

Impedance: 64 ohms

Frequency response (Headphones): 60 Hz – 25kHz

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

ActiveGard™: 110 dB SPL @ 1 kHz

Distortion: ‹ 0.1 % @ 1 kHz, 100 dB SPL

Max. Sound pressure level (active): 110 dB SPL @ 1 kHz (ActiveGard on)

Sensitivity: 108 ±3 dB SPL / 1 V rms / 1 kHz

Noise cancellation: Max 32 dB (passive)

Contact pressure: 6.0 N ± 0.75 N

Power consumption: 500mW

Weight w/o cable: 297 g


For more information, please visit the manufacturer's website.