Sennheiser HD 300 PROtect Monitoring Headphones with Active Gard Hearing Protection

Professional ears not only require crystal-clear, high-resolution sound, but also protection from unexpected audio level peaks. Here's where the ActiveGard™ system built into Sennheiser's HD 300 PROtect headphone set steps in. Rather than just clipping audio peaks above 110 dB, the patented ActiveGard system actually trims down the overall sound level to the maximum permitted volume, while retaining all the information as well as dynamics in the process. Other design elements also protect the concentration of the user. Previously disruptive or harmful volumes therefore remain distortion-free and clear, as well as safe, plus production control is retained at all times. Not only does the HD 300 PROtect satisfy the European EC noise directive on industrial safety and noise control, but it also safeguards the hearing and presence of mind of all production staff, even in the event of big or small surprises.

Sennheiser HD 300 PROtect Includes:

• (1) HD 300 PROtect headphone
• (1) cable (1.5m with 3.5mm jack)
• (1) ¼" Adapter jack
• (1) Quick start guide

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

Sennheiser HD 300 PROtect Specifications:

• Impedance: 64 ohms
• Frequency response (Headphones): 60 Hz - 25 kHz
• Max. sound pressure level: 123 dB SPL @ 1 kHz (ActiveGard off)
• Contact pressure: 6.0 N ± 0.75 N
• Ear coupling: circumaural
• Power consumption: 500mW
• Storage temperature: -55° C to +70° C
• Operating temperature: -15° C to +55° C
• 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
• Transducer principle (headphones): dynamic, closed
• Weight (without cable): 297 g
• Noise cancellation: Max 32 dB (passive)