Over-Ear Headphones · owner-verdict comparison

Bose QuietComfort Ultra Headphones (2nd Gen) vs Sennheiser HD 620S: what real owners say

Real owners lean toward the Sennheiser HD 620S: 58% of 93 owners recommend it, vs 36% of 434 for the Bose QuietComfort Ultra Headphones (2nd Gen).

Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score

Bose QuietComfort Ultra Headphones (2nd Gen)

36%of 434 owners recommend
36% recommend · 24% neutral · 40% don't
Owners praise
  • Comfort over long flights and full work days, including for glasses wearers
  • Ear cups deep enough that ears sit inside them rather than being pressed
  • Noise canceling that buries steady noise like engines, fans and road hum
Owners complain about
  • A background hiss or white noise floor with nothing playing, audible to many owners though not all
  • Popping and thumping when walking, running, or when a door slams nearby
  • A firmware update that removed switching devices from the headphones themselves
Full owner report →

Sennheiser HD 620S

58%of 93 owners recommend
58% recommend · 24% neutral · 18% don't
Owners praise
  • Surprisingly wide, spacious soundstage for a closed-back design, with several owners saying it rivals or beats open-back headphones in this regard
  • Excellent comfort and passive isolation, with soft, deep ear cups and padding many describe as some of the best they've worn
  • Outperforms other closed-backs owners have compared it to, including the DT770, FT1, HDB630, and Noire X
Owners complain about
  • Treble can be harsh, bright, or metallic-sounding, especially in the upper registers and vocals
  • Getting a proper seal and comfortable fit is finicky for some, including a protruding headband anchor piece pressing into the ear cup area
  • Bass can feel weak, anemic, or lacking low-end extension, particularly noticeable for movies and sub-bass-heavy content
Full owner report →

Which should you buy?

Get the Bose QuietComfort Ultra Headphones (2nd Gen) if
  • ✓Frequent flyers who want quiet on a plane and a case that fits a carry-on
  • ✓Glasses wearers and anyone whose head hurts in tighter-clamping headphones
  • ✓All-day desk wear where the headphones go on in the morning and stay on
  • ✓Listeners who like a full bass-forward sound and will spend a minute in the app
Skip it if
  • Anyone sensitive to background noise during podcasts, quiet passages or silence
  • Walkers, runners and commuters on rough roads, where the noise canceling pops
Get the Sennheiser HD 620S if
  • ✓Gamers wanting a closed-back with wide soundstage for competitive FPS
  • ✓Office/WFH users needing strong passive isolation from surrounding noise
  • ✓Sennheiser 6XX/650 fans wanting similar tonality in a closed-back
  • ✓Listeners willing to apply EQ to unlock the headphone's full detail
Skip it if
  • People with fit issues who can't get a proper seal for bass
  • Bass-heads or movie watchers wanting deep sub-bass rumble

What Bose QuietComfort Ultra Headphones (2nd Gen) owners say

“I’m loving both Bose models though.”
— Zealousideal_Bid2690 on Reddit
“Its very good. quality is top notch”
— Adorable_Toe79 on Reddit
“I had the Ultra headphones which caused severe skin irritation. I got rid of them as the only solution was buying third party ear pads which would have changed the sound.”
— TheLawPlace on Reddit

What Sennheiser HD 620S owners say

“Just got my 620s yesterday, I like it, which is saying a lot for a closed back. I think it’s easily one of the best closed back headphones not only in the price range, just in general.”
— MoonWun_ on Reddit
“Crazy enough, the HD800s and the HD620s share the top spot in my endgame headphones. And the price difference is over €1,000. I just can’t believe what the HD620s deliver for €279.”
— No-Desk-1808 on Reddit
“I think technically the 620s but the design of the ear cups means they have this bit that protrudes into the ear cups (I think the anchor for the headband) and it’s quite uncomfortable (at least for me).”
— gussic on Reddit

Bose QuietComfort Ultra Headphones (2nd Gen) vs Sennheiser HD 620S: frequently asked questions

Is the Bose QuietComfort Ultra Headphones (2nd Gen) or the Sennheiser HD 620S better?

Real owners lean toward the Sennheiser HD 620S: 58% of 93 owners recommend it, vs 36% of 434 for the Bose QuietComfort Ultra Headphones (2nd Gen).

Who should get the Bose QuietComfort Ultra Headphones (2nd Gen)?

Owners point the Bose QuietComfort Ultra Headphones (2nd Gen) at frequent flyers who want quiet on a plane and a case that fits a carry-on, and glasses wearers and anyone whose head hurts in tighter-clamping headphones.

Who should get the Sennheiser HD 620S?

Owners point the Sennheiser HD 620S at gamers wanting a closed-back with wide soundstage for competitive FPS, and office/WFH users needing strong passive isolation from surrounding noise.

What do owners complain about?

The most-cited downside of the Bose QuietComfort Ultra Headphones (2nd Gen) is a background hiss or white noise floor with nothing playing, audible to many owners though not all. For the Sennheiser HD 620S, it's treble can be harsh, bright, or metallic-sounding, especially in the upper registers and vocals.