Sennheiser HD 620S Over-ear

Detailed, accurate sound ; Beginnings of sound isolation

No buttons or touch controls

Sennheiser eschews the typical open-back design for reference headphones with the closed-back HD 620S, allowing for a small amount of sound isolation against the outside world. They won’t do much on a noisy commute, but the HD 620S headphones offer a...

Open and spacious sound by closed-back standards ; Properly built and finished ; Laid-back and informative

Not the most assertive listen ; Fit won’t suit everyone ; Doesn’t fold

When is a closed-back pair of headphones not a closed-back pair of headphones? When it’s the Sennheiser HD 620S, the least closed-sounding pair of closed-back headphones this sort of money can currently buy.

Airy, spacious sound ; Detailed, smooth and easy-going presentation ; Sturdy build

Could do with a greater dose of punch and dynamics ; Some might find the clamping force too firm

Sennheiser’s first closed-back HD 600 headphones do the range proud with their eminently relaxed, airy and easy-listening performance

Wide, open sound for a closed-back headphone ; Ample bass presence and precise high-end ; Thick padding counters strong clamping force

Design borrowed from lower-tier range ; Not everyone will appreciate the extra bass ; Not as portable as some rivals

A closed-back take on a well-regarded pair of wired headphones. The Sennheiser HD 620S gets the tonality right, without skimping on bass presence – but it’s not perfect, and the styling doesn’t match other 600-series cans.

I never believe in “bad-sounding” headphones. When the product engineers tune the headphones, they are doing for specific target audience. The Sennheiser HD 620S is yet again a compromise that claims to deliver open-back experience. I would prefer that...

Much improved sub-bass presence ; Most comfortable pads on a HD6 Series headphones to date ; Easy enough to pair with a wide range of amplifiers

No balanced cable included ; Some flex noise in the housing

Summary

Wide, open sound for a closed-back headphone ; Ample bass presence and precise high-end ; Thick padding counters strong clamping force

Design borrowed from lower-tier range ; Not everyone will appreciate the extra bass ; Not as portable as some rivals

A closed-back take on a well-regarded pair of wired headphones. The Sennheiser HD 620S gets the tonality right, without skimping on bass presence – but it’s not perfect, and the styling doesn’t match other 600-series cans.