Sennheiser HD 300 PROtect

A professional closed monitoring headphones with ActiveGard Automatic Limiting Technology. They have crystal clear high definition sound and unexpected volume protection. Hearing protection technology can adjust the overall sound to the maximum allowable volume while maintaining all dynamic features. In addition, they offer maximum ambient noise shielding, a sound pattern for best clarity and resolution, and an ergonomic design. The headphone cable has a short coiled section to reduce the structure-borne noise. Included is a spare one-sided wound cable with a 3.5 mm jack connector and 1 screwed adapter.

Specifications:

• Impedance: 64 Ohm
• Frequency response (Headphones): 6 Hz – 25kHz
• 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
• 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 w/o cable: 297 g
• Noise cancellation: Max 32 dB (passive)