Sennheiser HD 660s vs HD650: An In-Depth Comparison

The high-quality headphones should have a clear and balanced sound. They should be comfortable in design, versatile, and well-built. In addition, the headphones should have more features like noise-canceling, dedicated companion apps for customization, voice assistants, wireless connectivity, and multi-device pairing.

Some of these features may be absent if you buy a pair of headphones at lower prices. Buy the headphones with all these features and versatile options of great benefits. We have selected two models of headphones from Sennheiser. We will compare Sennheiser HD 660 S vs. Sennheiser Pro Audio HD 650.

Sennheiser HD 660s vs HD650: Comparison Table

FeaturesSennheiser HD 660sSennheiser HD650
Sound QualityNeutral, balanced, detailed midrangeWarm, smooth, slightly dark with more bass
ComfortOver-ear open-back design, well-padded velour ear padsOver-ear open-back design, plush velour ear pads
DesignModern aesthetic, matte black finishClassic aesthetic, titanium-silver finish
PriceTypically higherMore affordable

Sennheiser HD 660s vs HD650: A Detailed Comparison

Sennheiser HD 660S – HiRes Audiophile Open Back Headphone

Top Pick


  • 4.4-millimeter Pentaconn balanced stereo plug
  • Impedance: 150ohms
  • High-frequency response: 10-41000 Hz

By using the Sennheiser HD 660, enjoy music in high sound quality, whether on the road at home or out in a sports stadium. The HD 660S includes two cables; one cable has a 6.35-millimeter stereo plug, and the other has a 4.4-millimeter Pentaconn balanced stereo plug. It also consists of a 6.35-millimeter to 3.5-millimeter adopter.

The Sennheiser HD 660S comes in at an impedance of 150ohms, allowing direct connection to home and mobile hires audio devices. The HD 660S is uniquely designed with a matte black finish. It is the most durable and reliable headphone.

These headphones are not only of high quality, but they are also very comfortable. Their weight is deficient due to plastic material. The foam pads wrapped in velour are very soft for every skin type.

Its open-back construction allows airflow to the ears. You will be relaxed and cool while listening to music. The HD 660S delivers accurate and acoustic sound.

This headphone has lightweight transducers and aluminum voice coils attached with diaphragms precision-crafted with stainless steel fabric. This will result in more control of diaphragm movement and less distortion. The HD 660F has a high-frequency response of 10 to 41000 Hz (10 dB).

  • Incredible midrange
  • Very comfortable to wear for long movies
  • Open back design
  • Clear audio quality sound
  • Absence of noise-canceling feature
  • High price

Sennheiser Pro Audio HD 650 Open Back Professional Headphone

Our 2nd Pick


  • 3.5-millimeter jack plug
  • High-frequency response: 10-39500 Hz

Sennheiser has been manufacturing headphones for 75 years, and their sound quality is smoother and warmer with deep bass. It is well-built, durable, and comfortable. These are best for those who want a big and warm sound.

It has an improved high-frequency response of 10-39500 hertz (10db). It is built with a magnet system for reduced harmonics and distortion. Also, its high-power neodymium magnets deliver high efficiency with a 3.5-millimeter jack plug. In addition, it has improved features for better sound quality.

  • The ear pads are silk lined and perfect in size
  • Open back so you can hear the voice from outside
  • Clear and even sound
  • The parts of headphones are replaceable
  • Paint can be scratched and chipped easily if not cared for properly
  • Complaints about the material of headphone


Choosing the right headphones takes work. You must check the specifications and features of different headphones and select the best headphones to fulfill your needs.

Both models of the Sennheiser 660 S and 650 are of high quality, and the open back feature Sennheiser 660S is available at a higher price, but it sounds clear and transparent. You can buy this if you can afford it to buy.

Sennheiser 650 is available at a lower price, but there are complaints about the material and paint of the headphones. However, it can be used longer if well cared for. Invest your money carefully in any headphones. We hope that you will get the worth of your money.

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