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.

Comfortable fit ; Ideal for long-time use ; Well-balanced mid-tones

Expensive ; Not enough passive noise isolation ; Underwhelming treble

The Sennheiser HD 620S are a good choice for audiophiles, especially those who want to use these for editing or other professional endeavours. For wired headphones with passive noise isolation, the Rs 32,990 price tag may be a bit much for casual...

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.