Sennheiser HD 660s vs HD650 | Which is Best headphone?

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.

If you buy a pair of headphones at lower prices, some of these features may be absent. 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


Sennheiser HD 660 S

Sennheiser HD650






0.58 lb

0.57 lbs


10.12×4.25 × 12.6 inches

10×4.33 × 12.4 inches

Fit type



Frequency response

10 to 41000 Hz

10 to 41000 Hz

Open back




wired 6.35mm/4.4mm


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 Sennheiser HD 660, enjoy the music in the high sound quality, whether on the road or at home, out in a sports stadium. The HD 660S includes two cables one cable has a 6.35-millimeter stereo plug, and the other with 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 that allows direct connection to home and mobile hires audio devices. The HD 660S is uniquely designed with matte black finishing. 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 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 comes with an improved and 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 headphone is not easy. You have to check the specifications and features of different headphones and select the best headphone to fulfill your needs. Both models of 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 for a longer time if well cared for. Invest your money carefully in any headphones. We hope that you will get the worth of your money.

Read More: Best Gaming Headsets under $100 | Sonos Beam vs Bose Soundbar 300