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Sennheiser HD660S Reviews & Specs

As the world becomes increasingly digital, the demand for high-quality headphones has continued to grow. The Sennheiser HD 660 S headphones are a top-tier option for audiophiles and music enthusiasts who demand exceptional sound quality and build. In this review, we'll take a closer look at the specs, what we like and don't like about these headphones, and our overall verdict.

  • Type: Over-ear, open-back headphones
  • Frequency response: 10Hz - 41kHz
  • Impedance: 150 ohms
  • Sound pressure level (SPL): 104dB (1kHz/1Vrms)
  • Weight: 9.17 oz (without cable)
  • Cable length: 9.8 ft

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  • Brand
    Sennheiser Consumer Audio

Last update on 2023-09-30 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Our Verdict

The Sennheiser HD 660 S headphones are a premium option for audiophiles and music devotees who value accurate sound reproduction and superior build quality. The open-back design provides an expansive soundstage and excellent clarity, while the neutral sound signature guarantees a natural and accurate reproduction of the music. The headphones are well-constructed and comfortable, and the detachable cable is a welcome addition. Some users may be hindered by the high impedance, but those with a suitable amplifier or willing to invest in one will find these headphones to be an excellent option. The Sennheiser HD 660 S headphones offer premium sound quality in a comfortable and durable design.


What We Like

  • The Sennheiser HD 660 S headphones are a pair of high-end headphones with exceptional sound quality. The open-back design provides a spacious soundstage and exceptional clarity, making it simple to differentiate between instruments and voices. In addition, the headphones have a neutral sound signature, which means they do not emphasize any particular frequency range excessively, resulting in a natural and accurate sound.
  • The headphones have excellent build quality, with a sturdy metal frame and plush earpads that make extended listening sessions comfortable. We value the included detachable cable, which makes replacement simple if necessary.

What We Don't Like:

The primary disadvantage of the Sennheiser HD 660 S headphones is their high impedance of 150 ohms, which necessitates the use of a potent headphone amplifier. This may be a barrier for some users who lack a suitable amplifier or are unwilling to purchase one.


2 ratings
Nigel Wright
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