Sennheiser HD660s vs HD650

Sennheiser HD660s vs HD650 – Why Sennheiser HD650 is Best?

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Sennheiser HD660s vs HD650Sennheiser HD660S and HD650 have some similarities, but a few improved features made Sennheiser HD650 a better option here.

What Features Made Sennheiser HD650 Better?

  • Sennheiser HD650 comes with a specially designed acoustic silk, which ensures damping over the entire frequency to reduce distortion and provides a premium sound. On the other hand, Sennheiser HD660S doesn’t have this amazing feature.
  • It includes hand-selected matched drivers with optimized magnets to deliver maximum efficiency and a super output, whereas the Sennheiser HD660S isn’t that engineered.
  • The Lightweight aluminum voice coils of HD650 will provide a very fast transient response, which is not available on the other headphone.
  • HD650 has high-power neodymium magnets for maximum efficiency, which will give you a better experience of sound. But HD660s doesn’t have this option.

All these impressive features made Sennheiser HD650 a winner in every aspect. For the ultimate satisfaction with sounds, you can try this earphone.


Similar Features

  • Wired audiophile headphones.
  • Detachable wired for individual ear cups.
  • The same range of frequency response.
  • Both of the headphones weigh the same – 260g.

Comparison Chart: Sennheiser HD 650 vs 660s

Specifications Sennheiser HD660S Sennheiser HD650
Editor’s Rating 4.7 out of 5 4.7 out of 5
Size Over-Ear  Open Ear, Open Back
Connectivity Wired Wired
Transducer Principle Dynamic, Open Dynamic, Open
Frequency Response 10-41,000 Hz 10-41000 Hz
Sound Pressure Level 104 dB 103 dB
Impedance 150 Ohm 300 Ohm
Battery 1 Lithium-ion battery required(included) 1 Lithium-ion battery required(included)
Ear Coupling Over-Ear (circumaural) Over-Ear (circumaural)
Product Weight 9.17 oz 9.17 oz
Color Black Gray
Warranty 2-Years Warranty 2-Years Warranty

Differences & Similarities: Sennheiser HD660s vs HD650


The main focus during the build of these headphones was to deliver premium sound in every aspect. The design of Sennheiser HD650 focused to reduce the total harmonic distortion to 0.05 percent and provide you with the best sound. The hand-selected matched driver is used to optimize systems to minimize inter-modulation distortion.

The Sennheiser HD660S is also built with hand-picked drivers to deliver premium sound, but the overall sound experience won’t be better than the previous one.


The devices are different in terms of design. The HD650 has a premium look with an acoustic silk touch. This gray color body with a black earpad looks excellent with the shiny effect. The ear cups are balanced well with satisfying foamed in them. The HD660S is a black-colored headphone with a logo on the earpad. There is no additional design on that, but it still looks good.


The 118-inch long cable with the HD650 will allow you to use it with flexibility. A gold-plated jack plug with an adapter of 3.5mm is included with this device. The cable or wire of the ear pads is detachable, which enables you to carry them safely, or even if you want to connect with one ear pad, you can do that as well. The HD660S is wired with a 6.35mm to 3.5mm adapter.


The Earpad and the headband come are foamed with high-end materials, so there won’t be any pressure on the ears and head. Both the devices have quite the same kind of foamed bands for comfort. The ear cups are larger in size and will fit easily in any shape. You can change the earpads for any type of hygiene issue as they are exchangeable.

Durability & Warranty

You can be fully relaxed when it comes to these devices’ durability as they come from high-end quality materials. The wire is built with premium components to give you a long session with these devices. Also, as you can detach them whenever you want, you can carry them by separating the wires. While purchasing, You will have a 2-year warranty from Sennheiser. 

Final Words

Premium design with hand-picked drivers to give you the best sound experience, the HD660S is undoubtedly a beast. There is no need to reject this trustworthy headset and look for anything else. Go for the HD660S without a second thought and enjoy the best sound with remarkable comfort.

Frequently Asked Questions about Sennheiser HD660s and HD650

How comfortable are these headphones for a long-term session?

These will be extremely comfortable. The foamed earpads and headband won’t put any pressure on your ears.

As these are open-back headphones, is it ok to use them in the office?

There won’t be that noise that will interrupt your co-workers. But yes, the sound can be heard from outside.

Is there any warranty with the products? 

Yeah, if you buy from an authorized vendor, there is a global warranty.

Can I plug the cable into one earcup?

Yes, there are two independent connectors.

Are they made in China?

No, the HD650 is designed in Germany and Made in Romania/Ireland.

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