Sennheiser

Sennheiser HD 650 Open-Back Headphones

Name: Sennheiser HD 650 Open-Back Headphones
Brand: Sennheiser
SKU: HD650
Price: 399.95 CAD
Availability: OutOfStock

SKU:

HD650

$649.95

$399.95

Sale ends Thu October 22, 2026

On Display at Bay Bloor Radio.

Try before you buy! Over 100 headphones and earphones to choose from in-store. See the Store.

Personal attention, expert advice.

Message Us Call (416) 967-1122

Description
Specs
Dimensions
About Sennheiser
Warranty

Description

Sennheiser HD 650

A benchmark for total audio immersion

When the music matters most, the HD 650 reproduces the subtle details in your music with the same confidence as the highlights.

Open-back dynamic headphones
Go-to reference for analytical listening
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
Extremely tight production tolerances (± 1 dB) and handpicked components
Detachable 3-meter connecting cable made from highly conductive OFC copper
Made in Ireland at Sennheiser's state-of-the-art production facility

High-definition, since 2003

Expertly balanced acoustics, luxurious construction and timeless design.

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 favourite 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 our 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.

What's in the Box

MOMENTUM 5 Wireless Headphone
3m audio cable with 6.3mm jack
6.3mm to 3.5mm jack adapter
Documentation
2-Year Warranty

Specifications

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

For hygienic reasons, there are no returns on headphones once opened.

All in-stock headphones are available for personal demonstration in-store. We encourage you to try before buying to ensure satisfactory sound, fit, and functionality.

If an item is defective upon receipt, please notify us within 30 days of purchase so we can arrange an exchange. For issues following 30 days, we will work with you and the manufacturer within the scope of each brand’s warranty and service policies.

Specs

Dimensions

About Sennheiser

Warranty

This Sennheiser Audiophile product includes a 2 Year Manufacturer's Warranty.

Where possible and inventory permits, Bay Bloor Radio can assist with facilitating warranty claims with Sennheiser for products purchased at our store.

These warranty periods begin on the date of purchase of brand-new, unused products by the first end user and only applies to the original purchaser (first end user purchasing the product). Please retain your sales receipt (or your warranty certificate) as proof of purchase. Unless you submit a copy of your proof of purchase, which will be verified by your local Sonova Consumer Hearing GmbH service partner, you will be obliged to pay for any repairs that are carried out. Proof of purchase must state the date of purchase, point of purchase and name of the product.

If, within the applicable warranty period, the product is determined to have an original defect due to improper materials or workmanship, Sonova Consumer Hearing GmbH or their service partners will, without charge for labour or parts, repair or (at the discretion of Sonova Consumer Hearing GmbH) replace the product or its defective parts. Sonova Consumer Hearing GmbH may also at its discretion provide a partial or full credit of the original purchase price in exchange for the returned product.

Sonova Consumer Hearing GmbH or its service partners may replace defective products or parts with new or refurbished products or parts. All products and parts replaced become the property of Sonova Consumer Hearing GmbH or its service partners.

The following cases are not covered by the above warranties:

minor faults or deviations in the quality of a product which do not affect the product’s value or fitness for its intended purpose any accessories supplied with the product
rechargeable or disposable batteries (these products have a shorter service life, the length of which also depends on the frequency of use)
faults resulting from improper use (e.g. operating errors, mechanical damage, incorrect operating voltage) Proper use for the purposes of these warranties are defined as use of the product under the conditions stated in the instructions for use
faults due to wear and tear
any modification of products effected by the end user or a third party, unless Sonova Consumer Hearing GmbH has given its prior written consent to the nature and extent of the modification. For the avoidance of doubt, approved modifications will not void the warranty.
faults due to force majeure
faults of which the purchaser was already aware at the time of purchase

All warranty claims become void if the product is tampered with by unauthorised persons or repair shops. Further, these warranties are voided by removal or alteration of identification labels, serial numbers or safety labels on the product or its parts.

Full warranty details: https://www.sennheiser-hearing.com/en-CA/warranty-conditions