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Sennheiser HD 650 Audiophile Wired Headphones - Black by Sennheiser - Refurbished - Very Good condition

Sennheiser HD 650 Audiophile Wired Headphones - Black

Brand: Sennheiser

Condition: Refurbished - Very Good
$53199
$74763
-29% Save $21564
Updated: 7 days ago

Description

OVERVIEW:
When the music matters the most: 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.
Made with more in mind: Combines the best of modern transducer manufacturing with the attention to detail required to handle a wide variety of acoustic materials. Made in Ireland at a state-of-the-art production facility, the HD 650 delivers more: more details discovered, more musicality, and definitely more time for blissful listening. Our production tolerances are extremely tight, ensuring that your HD 650 experience is consistent with those all over the globe, whenever or wherever it was purchased. For example, the resonators feature stainless steel mesh to guarantee uniform performance after manufacturing. Even better, most parts on the HD 650 are modular, making them a dream to keep as your go-to hi-fi playback headphones for as long as you cherish them. From the velour pads to the earcup grille pattern, each component was crafted to guarantee a next-level personal sound experience so you can enjoy your music even more.
It's all about connection: Comes with a detachable, impedance-matched cable, stereo connector with audiophile-standard plug and premium adapter. Your HD 650 comes with a detachable, impedance-matched cable with ultra-low capacitance. The ¼-inch / 6.3mm stereo connector offers the audiophile-standard plug for connection to devices such as headphone amplifiers and A/V receivers, digital audio players, analog gear, and more. At 9.8 feet / 3m long, it offers unencumbered listening on gear deep within your shelves or in a favorite listening chair. A premium adapter is included to reduce the 6.3mm to 3.5mm / ⅛-inch for plugging into countless other audio devices.
FEATURES:
Open-back dynamic headphones.
Special damping element made from fine acoustic metal mesh.
Exclusive 42 mm transducer and 38 mm diaphragm.
Lightweight, timeless design and comfortable velour pads for hours of fatigue-free listening.
Frequency response: 12 - 41,000 Hz.
Go-to reference for analytical listening.
Extremely tight production tolerances (+/- 1 dB) and handpicked components.
Detachable connecting cable made from highly conductive OFC copper.
Impedance: 300 ohms.
Total harmonic distortion: <0.05%.

Specifications

  • Model Name: Sennheiser HD 650 Audiophile Wired Headphones
  • Frequency Response (Speaker): 10 Hz - 41,000 Hz
  • Sound Pressure Level (SPL): 103 dB (1 V)
  • Impedance: 300 Ω
  • 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
  • Article Number (SKU): 508825

Frequently Asked Questions

Why Should I buy a certified pre-owned Sennheiser HD 650 Audiophile Wired Headphones?
A certified pre-owned Sennheiser HD 650 Audiophile Wired Headphones offers incredible value, with savings up to 70% off vs new. Every item passes a 40+ point inspection to ensure it meets our high quality standards. It's the smarter way to shop—better for your wallet, and better for the planet.
What is Reebelo's return policy?
We offer a free 30-day change of mind policy, giving you plenty of time to make sure your Sennheiser HD 650 Audiophile Wired Headphones is perfect for you.
What does the warranty cover?
Every product includes a warranty of up to 12-months covering all functional defects under normal use.
How does buying certified pre-owned products benefit the environment?
Purchasing a certified pre-owned Sennheiser HD 650 Audiophile Wired Headphones is a powerful move for the planet, reducing CO2 emissions by up to 92% compared to buying new. By extending the life of high-quality goods, you bypass the carbon-intensive manufacturing process and prevent valuable materials from reaching landfills, where they can take centuries to decompose. Reebelo is driving a circular economy where products are kept in use rather than becoming part of the 62 million tonnes of waste generated annually. Your choice helps keep high-value materials in circulation and supports a more sustainable future for all.

Sold by

Reebelo

Verified Retailer

Leading certified refurbished marketplace

  • 12-month warranty included
  • 30-day money-back guarantee
  • Environmentally conscious refurbishment
  • Grade-certified by expert technicians

Product Details

SKU:
ru-sku-mpnsy1yjMpasj2rVQdkwJix
Country:
US

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $216 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Sennheiser products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.

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