Sennheiser HD 300 PROtect Over-Ear Monitoring Headset w/ ActiveGard

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The Sennheiser HD 300 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.

The patented ActiveGard® technology of the HD 300 PROtect does not simply switch off at peak levels above 110 dB but reduces signals that are too loud down to a safe level. Previously disruptive or harmful volumes, therefore, remain distortion-free and clear, and control of the production is retained at all times. The HD 300 PROtect not only satisfies the European EC noise directive on industrial safety and noise control, but also safeguards the hearing and presence of mind of all production staff, even in the event of big or small surprises.

The acoustics of the HD 300 PROtect are systematically tailored to the requirements of professional use. Its linear frequency response provides a neutral, high-resolution sound. With its highly sensitive transducers and precision diaphragms, the HD 300 PROtect achieves a phenomenal depth of detail which it reproduces—even at maximum volumes—in a crystal clear manner without distortions. For an ambient sound, Sennheiser recalculated the air volumes in front of the ear at a level, inspired by the HD 250 linear.

Professionals often wear headphones for several hours. The HD 300 PROtect is precisely designed for this purpose with its particularly soft, viscoelastic earpads (which also systematically filter out ambient noise) and finely balanced pressure distribution. This makes the HD 300 PROtect an exceptionally inconspicuous companion, even when used continuously.

Sennheiser HD 300 PROtect - Features:

• 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

• Accoustic Principle: Dynamic, closed
• Ear Coupling: Circumaural
• Frequency Response: 6 to 25,000 Hz
• Impedance: 64 Ω
• Power Rating: 500 mW
• Sensitivity: 108 ±3 dB SPL / 1 Vrms / 1 kHz
• Max. SPL:
  • ActiveGard Off: 123 dB SPL @ 1 kHz
  • ActiveGard On: 110 dB SPL @ 1 kHz
• Ambient Noise Attenuation: ≤32 dB
• Distortion: <0.1% @ 1 kHz, 94 dB SPL
• Contact Pressure: approx. 6.0 N
• Temperature:
  • Operation: 5° to 131° F | -15° to +55° C
  • Storage: -67° to 158° F | -55° to +70° C
• Relative Humidity: ≤ 90 %
• Weigth: 10.5 oz | 297 g, w/o cable
• Cable Length: 5.1 ft | 1.55 m