SENNHEISER HD 300 PROtect

Closed professional headphones

• ActiveGard technology for hearing protection
• High-resolution linear sound reproduction
• Passive noise isolation up to 32 dB
• Viscoelastic earcups for maximum comfort
• Durable materials and replaceable cables

Sennheiser HD 300 PROtect: safe and detailed listening

The HD 300 PROtect offer a professional listening experience that combines sound fidelity and hearing protection. Thanks to ActiveGard technology, sudden peaks are reduced without distortion, ensuring sound is always clear even in intense work environments.

Intelligent protection with ActiveGard

Unlike systems that simply mute the sound, ActiveGard lowers signals above 110 dB to a safe level while maintaining sound integrity. Compliant with European EC industrial safety regulations, it is ideal for sound engineers, technicians and producers.

Accuracy and fidelity for professional use

Linear frequency response and high-sensitivity transducers enable faithful reproduction even at high volumes. The acoustic architecture is inspired by the HD 250 Linear, optimized for natural, defined ambient sound.

Guaranteed comfort even for long sessions

Viscoelastic earcups reduce external noise by up to 32 dB and provide exceptional comfort even after hours of use. Pressure distribution is balanced to reduce fatigue.

Technical specifications.

• Maximum sound pressure level: 123 dB SPL @ 1 kHz (ActiveGard off)
• Passive noise attenuation: up to 32 dB
• Sensitivity: 108 ±3 dB SPL / 1 V rms / 1 kHz
• Transducer type: dynamic
• Wearing style: circumaural (over-ear)
• Connection: wired
• Power consumption: 500 mW