Sennheiser HD 650

Features and Specifications

The Sennheiser HD650 headphones are exceptionally comfortable to wear due to the elliptical design which has been adapted to the shape of the ears of the wearer. Positive feedback has been received from the majority of Sennheiser HD650 headphone owners about the level of comfort achieved with extended periods of wearing the Sennheiser HD 650 headphones.

The Sennheiser HD 650 headphones can be directly connected to individual hi-fi components of the highest quality such as SACD, DVD-A and CD players. Many users report that they commonly also use the headphones with iPods and MP3 players as well as their high spec hifi components.

The major features of the Sennheiser HD650 headphones are:

• Individually selected and matched headphone systems with tight tolerances (in the range ± 1 dB)


• Highly optimised magnet systems using computer technology to reduce harmonic and possible inter-modulation distortion


• Lightweight voice coils made from aluminium to maximise transient response and signal accuracy


• High efficiency achieved using neodymium ferrous magnets


• The Sennheiser HD 650 have an elegant high-quality titanium and silver finish


• A specially developed acoustic silk damping element ensures a uniform damping over the entire diaphragm surface.


• The above features of the Sennheiser HD 650 headphones lead to consistent performance in all climates from dry through to cold and humid environments


• The HD 650 headphones include a specially developed connecting cable made from highly conductive OFC copper and Kevlar-reinforced


• Gold plated ¼” jack plug with adaptor lead to 3.5 mm jack plug


• Standard two year warranty with all Sennheiser HD650 headphones

Sennheiser HD 650 - Technical data

• Frequency response 16 – 30,000 Hz (-3 dB) 10 – 39,500 Hz (-10 dB)


• Acoustic principle dynamic, "open-aire"


• Frequency curve diffuse-field loudness equalization


• Nominal impedance 300 Ω


• Sound pressure level at 1 kHz 103 dB (1 Vrms)


• Long-term max. input power 500 mW as per EN 60-268-7


• THD ≤ 0.05 %


• Sound coupling to the ear circumaural


• Headphone caliper pressure approx. 3.4 N ± 0.3 N


• HD650 headphone weight (without cable) 260 g


• Plug 6.3 mm ∅ stereo jack


• Adapter 6.3 --> 3.5 mm ∅ stereo jack


• Connecting cable OFC signal cable, 3 m

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