Up for sale a Sennheiser HD 650 High-Definition Open-Back Lightweight Dynamic Headphones w/Box - #5301048974!  We are an Authorized Dealer of Sennheiser!  This item is an Open Box in Mint Cosmetic Condition and it comes with the Full Manufacturer's Warranty*.  On this one, there are few fine scratches, marks and few other imperfections here and there (see 5th to 12th pictures), but absolutely nothing major.  Unit comes with its Cables in its Original Box. 

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SENNHEISER HD 650 

A benchmark for total audio immersion.

The HD 650 reproduces the subtle details in your music with the same confidence as the highlights.

The (high) definition of smooth

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 audiophiles for its musical, non-fatiguing sound while still offering intimate levels of detail. Upon the first note, your favorite tracks reveal their true potential, and each moment of that performance becomes an opportunity to react all over again. For the hi-fi enthusiast that prioritizes engaging sound quality the HD 650 is an instant upgrade.

Smooth response and dimensional soundstage

Open earcups provide each and every soundwave ample room to expand as they would in nature.

The HD 650’s signature sound starts with our in-house acoustics. Audiophiles know that the best components perform at their peak when nothing stands in their way. The 42mm transducer deploys a 38mm diaphragm with aluminum 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.

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FEATURES:

- Open-back dynamic headphones

- Go-to reference for analytical listening

- Special damping element made from fine acoustic metal mesh

- Extremely tight production tolerances (± 1 dB) and handpicked components

- Exclusive 42 mm transducer and 38 mm diaphragm

- Detachable connecting cable made from highly conductive OFC copper

- Lightweight, timeless design and comfortable velour pads for hours of fatigue-free listening

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SPECIFICATIONS:

Frequency response (speaker) : 10 Hz - 41,000 Hz

Sound pressure level (SPL) : 103 dB (1 V)

Impedance : 300 ohm

Total harmonic distortion (THD) : < 0.05 % (1 kHz, 1 V)

Connector : 1/4" (6.35 mm) stereo jack plug

Adapter : 1/4" (6,35 mm) stereo jack plug to 3,5 mm stereo jack plug

Cable length : 3 m

Transducer principle : dynamic, open

Weight : 260 g

Ear coupling : circumaural

Magnetic field : 1.8 mT

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*The full manufacturer's warranty is only valid through us.