Sennheiser HD650 Open-Back Audiophile Headphones

Discount 21% List price: £357.50
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HD 650 Open-Back, High-Performance Audiophile Headphones, by Sennheiser.

The superb HD 650 by Sennheiser are a benchmark for total audio immersion. HD 650 reproduces the subtle details in your tracks with the same confidence as the highlights. With a fluid signature tuned for hours of fatigue-free listening, it is the headphone to reach for when the music matters most.

With expertly balanced acoustics, luxurious construction and timeless design, the HD 650 has all of the perks of a high-performance sports car and none of the quirks. This open-back headphone is beloved by studio professionals and audiophiles alike for its musical, non-fatiguing sound while still offering intimate levels of detail. Upon the first note, your recordings reveal their true potential, and each moment of the performance becomes an opportunity to react all over again. Whether for audio editing, mixing, mastering or critical listening, the HD 650 is an instant upgrade.

Audio pro’s know that the best components perform at their peak when nothing stands in their way. It’s no surprise that the response and dimensional soundstage of the HD 650 are smooth. The open earcups provide each and every soundwave ample room to expand as they would in nature.

The 42 mm transducer deploys a 38 mm diaphragm with aluminium voice coil specifically tuned for extended, critical listening: overall treble and low-frequency presence are effortless while midrange is reproduced with lifelike composure—none sacrificing their organic roots to get there. Modern high-resolution sample rates benefit especially well from the HD 650’s willingness to reveal subtle nuances without resorting to over-hyping the treble range.

Each transducer manufactured is measured against rigid specifications and paired with a perfect match for consistent representation of the entire frequency spectrum in both channels. By reducing variances between left and right channels, the headphone reproduces mastering-grade sound independent of room acoustics or loudspeaker positioning.

Your HD 650 comes with a detachable, impedance-matched cable with ultra-low capacitance. The 1/4 inch / 6.3 mm stereo connector offers the audiophile-standard plug for connection to devices such as headphone amplifiers and A/V receivers, digital audio players, computer-based workstations, analog gear, and more. At 9.8 feet / 3 m long, it offers unencumbered listening on gear deep within your shelves, studio, or desktop. A flexible adapter is included to reduce the 6.3mm to 3.5mm / 1/8-inch for plugging into countless other audio devices.


  • Audiophile-quality open-back, over-ear headphones.
  • Used worldwide by studio professionals and music lovers alike.
  • 42 mm dynamic transducer with aluminium voice coil.
  • Modular design, with easy-to-replace parts.


  • Wearing Style: Headband
  • Color: Titan
  • Frequency Response: 10 - 41000 Hz
  • Sound Pressure Level (SPL): 103 dB
  • Total Harmonic Distortion (THD): < 0.05 %
  • Contact Pressure: 6.0 N &plusm: 1 N
  • Ear Coupling: Circumaural / Over-Ear
  • Connector: 6.35 mm stereo jack plug
  • Adapter: 6.35 mm to 3.5 mm stereo jack plug
  • Cable Length: 3.00 m
  • Transducer Principle: Dynamic, Open Back
  • Nominal Impedance: 300 Ω
  • Weight w/o Cable: 260 g


  • HD 650 Audiophile Headphones
  • Cable (3.00 m)
  • Flexible Adaptor (6.3 - 3.5 mm)

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Headphone Features

Dynamic Driver Size:
42.00 mm
Transducer Type:
Ear Cup:
Open Back
Headphone Type:
  • Hi-Fi Headphones
  • Over-Ear Headphones
300.00 Ohms
Frequency Range:
10 - 41,000 Hz
Cable Length (m):
3.00 Metre
Phone Remote:
Smartphone Remote:


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