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. 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. 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.
Q: What is the benefit of open-back earcups?
A: Open-back earcups allow for the natural expansion of sound waves, creating a spacious soundstage.
Q: Are the cables detachable on these headphones?
A: Yes, the Sennheiser HD 650 has detachable para-aramid reinforced cables with OFC copper.
Q: How is the connection type for these headphones?
A: The Sennheiser HD 650 uses a wired connection.
Q: What is the connector size for the headphones?
A: The connector size is 1/4 inch (6.35mm).
Q: What type of earcups does this headphone have?
A: The Sennheiser HD 650 has elliptical earcups with velour pads.
Q: What is the frequency response of the Sennheiser HD 650?
A: The Sennheiser HD 650 has a wide frequency response of 10 to 41,000 Hz.
Q: What size are the transducers in these headphones?
A: The Sennheiser HD 650 features 42mm transducers.
Q: are the earpads replaceable?
A: undefined

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. 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. 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.

Enjoy your music on a completely new level. An intimate, relaxed sound signature combines with outstanding precision and exceptional comfort — and now, extended sub bass — for a deeply moving experience. The extremely precise yet non-fatiguing sound of the HD 660S2 delivers even more impact with extended sub bass. With an optimized surround, transducer airfl ow, and coil our engineers doubled the sound pressure at the lowest octaves. You can feel the lowest note on the piano (27.5 Hz) or the kick of the bass drum (45-60 Hz) as if you were there.

Sennheiser HDB 630 Wireless Audiophile Headphones - High-Res Sound with Parametric EQ and Crossfeed, Bluetooth Headset with ANC and 60h Battery Life, Lightweight Design, Clear Calls - includes BTD 700. Flawless sound, no wires, and a battery that lasts for up to 60 hours. The Sennheiser HDB 630 lets outaketrueaudiophilesoundanywhere you go. Precision engineering brings out breathtaking clarity, a neutral tone, detailed mids, and a wide soundstage. Use aptX HD and aptX Adaptive Bluetooth® codecs from a high-resolution source such as Sennheiser’s BTD 700 Bluetooth® adapter or plug in via USBC for pure fidelity. The advanced parametric EQ lets you define frequency bands and filters as you please. Cross Fade balances classic tracks for better headphone listening while Active Noise Cancellation eliminates background noise while maintaining high-end audio quality.

The HD 560S indulges the audiophile evaluating their music’s entire journey through the audio path. With linear acoustics and exceptional low-frequency performance the HD 560S was crafted for the analytical audio enthusiast. This open-back headphone is tuned to reveal every detail in your music without sacrificing the gratifying bass response. When combined with its ultralight chassis and luxurious comfort, it’s a breakthrough value in reference monitoring.
| Pros for Sennheiser - HD 650 - Hi-Res Audiophile Open Back Headphone - Quality Transducer and Diaphragm - Gray | |||
|---|---|---|---|
| There were no pros for this product— | There were no pros for this product— | Sound Quality, Comfort, Battery Life, Connectivity, Included Accessories | Sound Quality, Comfort, Bass, Weight, Fit |
| Cons for Sennheiser - HD 650 - Hi-Res Audiophile Open Back Headphone - Quality Transducer and Diaphragm - Gray | |||
| There were no cons for this product— | There were no cons for this product— | Design, Touch Controls | Cable Length, Clamping Force |
Wanted to get into the audiophile headphone space and the Senny HD600 and 650 are always on people’s short lists. Went for the 650’s over 600’s due to the reported increase in bass response. I think they sound phenomenal, wide soundstage, crisp clear highs that are not overwhelming or tiring, punchy bass without overpowering the mids. The mids are very forward. The separation of the insturments is amazing. I’m very pleased with these headphones and highly recommend them.
21stCenturySchiziodMan Posted
These are the most comfortable headphones i’ve used yet. They sound great but run a little quiet sometimes when you wanna crank up the volume a bit. The headrest piece does feel a bit flimsy too but overall definitely worth the buy.
Wahoo Posted
Great sounding heasphones with teriffic presence. I’m now hearing things in fhe music I’ve never heard before. If you are an audiophile, don’t pass fhese upl!
HolidayLights Posted