Best Headphones
Sennheiser HD 660S2

#12 overall · open-back wired

Sennheiser HD 660S2

The modern Sennheiser 6-series for vocal-first listeners who found the HD 600 too lean.

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People who recommend it
60
Say they own it
90
Mentions
688
Posts read
308
Check price on Amazon · $680Buy direct from the maker
Own these? Vote

Typical price, checked Sep 2026. Sennheiser US store price $679.95 (read 2026-09-26)

What owners love

  • Vocals and mids: owners who compared it with the Sundara and DT 1990 give it the win on voices
  • Smoother, less fatiguing than bright rivals; long sessions without ear pain
  • Large cups that fit big ears; light for hours of use
  • The S2 adds the bass the original 660S was criticised for

The complaints

  • Bass is still modest next to planars
  • Some units creak
  • Price: owners often call it a little overpriced against the HD 600/650 or the 58X

Where owners disagree: HD 6XX and 58X owners say the 660S2 is not a big enough step up for the money; 660S2 owners say it is the one they keep coming back to.

The 12 sources

Owner = the person says they use it. Recommendation = passed on without saying so. Dates are when the thread or video was posted.

Owners name it for

Compared with

The headphones people weigh against this one most often, counted from comments that name both.

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