Sennheiser HD 650 Headphones

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The Sennheiser HD 650 is a reference-quality, open, over-the-ear, dynamic headphone with extremely natural sound, image, and fidelity. You don’t just hear the music – you are immersed in it. Experience the legendary Sennheiser HD 650.

Recommended by Benchmark

"The Sennheiser HD 650 is one of my favorite headphones. These are one of my go-to headphones for critical listening when evaluating the performance of our products. Hands down, these are the best headphones under $1000!" - John Siau, VP, Benchmark Media Systems, Inc.

Enjoy Sound in all its Perfection

You will be captivated by the pure and unadulterated reproduction of the HD 650 headphones. Discover the crystal clear world of sound and the ultimate in dynamics. The HD 650 have superbly low harmonic distortion and precision sound reproduction across the entire frequency range. The bass is well balanced and crisp, with authentic deep bass reproduction. The treble and mid range are well balanced and ensure superbly realistic voice reproduction.

Instrumental music is taken to a whole new level with the HD 650 headphones, which excel with their authentic reproduction of strings and wind instruments, for example. The top notes are pleasantly natural yet the lower notes are clear and vibrant.

Reference-Class High-Resolution Performance

The HD 650 features hand-matched drivers with a 10 Hz to 41000 Hz frequency response. These are true high-resolution headphones.

In the HD 650, audiophiles will experience truly unique natural sound. With sound this good, long concerts in the comfort of your home are a certainty, as the HD 650 also set standards in comfort and convenience. The HD 650’s are a genuine masterpiece, which will satisfy even the most demanding listener.

The experience Sennheiser gained in designing the legendary Orpheus headphones has been incorporated into the HD 650. They are superbly well balanced with crisp bass, excellent mid frequency response and a gentle, pleasantly natural treble. The HD 650 are the first dynamic headphones with such authentic and natural sound reproduction, both accurate and transparent.

Advanced Technology

The technology is innovative, and the workmanship immaculate. A specially developed acoustic silk ensures uniform precision damping over the entire frequency range and reduces harmonic distortion to an incredible 0.05%. The headphones are fitted with hand-selected, close-tolerance systems and the latest computer-design techniques have been used for the neodymium magnet system geometry to reduce intermodulation and harmonic distortion to a previously unattainable level.

The extremely lightweight aluminum voice coils ensure an extremely fast transient response; while neodymium iron magnets ensure maximum efficiency. The diaphragm was designed using the latest simulation technology.

Attention to Detail

The design has a refined titanium-silver finish and the earpieces feature 62% open metal mesh covers. The high-quality oxygen-free copper (OFC) cable was specially developed for the HD 650. It is extremely resilient thanks to its Kevlar fiber reinforcement, creating the perfect link with minimum sensitivity to handling noise.


  • Frequency response 10 – 41,000 Hz
  • Transducer principle dynamic, open
  • Frequency characteristic diffuse field equalized
  • Nominal impedance 300 Ohms
  • Sound pressure level at 1 kHz 103 dB (1 Vrms)
  • Long-term input power max. 500 mW as per EN 60-268-7
  • THD ≤ 0.05% (1 kHz, 100 dB)
  • Contact pressure approx. 2.5 N
  • Ear coupling circum-aural
  • Weight approx. 260 g (without cable)
  • Connector 1/4" (6.3 mm) stereo jack plug
  • Adapter 1/4" (6.3 mm) stereo jack plug to 3.5 mm
  • stereo jack plug
  • Connection cable oxygen-free copper cable (OFC), 3 m


HD 650 Manual


Sennheiser electronic GmbH & Co. KG gives a warranty of 24 months on this
product. For the current warranty conditions, please visit

Note: All headphones are non-returnable items.

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