Sennheiser HD 300 PROtect Monitoring Headphone with On/Off Selectable ActiveGard Limiter (Used)

Like New: Open box product with no signs of use.

Closed headphones for professional monitoring in the studio and for live work. Its highly-sensitive transducers with precision diaphragms deliver high-resolution, neutral and distortion-free sound across the entire frequency spectrum.

Viscoelastic earpads and specially sealed acoustic elements provide efficient shielding against external noise. A high level of wearing comfort is ensured by optimum pressure distribution and a recess for the fontanelle. Structure borne noise is filtered out through a coiled cable directly by the earpiece.

Key Features

• High-resolution and distortion-free sound for professional monitoring
• Linear frequency response
• Efficient, passive noise attenuation
• Robust design
• Entirely field replaceable components

Technical Specifications

Accoustic principle
Dynamic, closed
Ear coupling
Circumaural
Frequency response
6 – 25,000 Hz
Impedance
64 ohm
Power rating
500 mW
Sensitivity
108 -3 dB SPL / 1 Vrms / 1 kHz
HD 300 PRO
Max. SPL w/o ActiveGard: 123 dB SPL @ 1 kHz
HD 300 PROtect
Max. SPL ActiveGard off: 123 dB SPL @ 1 kHz
Max. SPL 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
Weigth (w/o cable)
approx. 297 g
Cable length
approx. 1.55 m
Temperature
Operation: -15 deg C to +55 deg C (5 deg F to 131 deg F)
Storage: -55 deg C to +70 deg C (-67 deg F to 158 deg F)
Relative humidity
<= 90 %