Over-Ear Headphones · owner-verdict comparison

Sennheiser HD 620S vs Sonos Ace Ultra: what real owners say

Real owners rate these about evenly: 58% of 93 Sennheiser HD 620S owners recommend it, vs 56% of 18 for the Sonos Ace Ultra.

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

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 →

Sonos Ace Ultra

56%of 18 owners recommend
56% recommend · 22% neutral · 22% don't
Owners praise
  • Clear sound upgrade over the original Ace, especially in the bass
  • Pulling TV audio from a Sonos soundbar to the headphones works well for some owners
  • Comfortable fit
Owners complain about
  • The TV audio link to a Sonos soundbar drops out, picks up static, or fails to connect for a few owners, and one returned a pair over it
  • A few owners still rate rivals higher, such as the AirPods Max 2 overall or Bowers & Wilkins headphones for music
Full owner report →

Which should you buy?

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
Get the Sonos Ace Ultra if
  • ✓Sonos soundbar owners who want to watch TV on headphones
  • ✓Original Ace owners who want more bass
Skip it if
  • Buyers counting on the soundbar link to work without dropouts from day one

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

What Sonos Ace Ultra owners say

“I think these sound leagues above the original Ace tho thanks to that custom dual-ring magnet motor. The bass is deep and tactile while the sound stage is far more wide and open in comparison to its predecessor.”
— @ventus77777-h on YouTube
“I have the Ace Ultra and i love them....especially with my Sonos Theatre system...i had the first ones and i like these ones more....no complaints whatsoever”
— @SpankyGolfaddict65 on YouTube
“do NOT buy these for TV audio swap. the feature sucks. source: i own these headphones.”
— @Beanz0911 on YouTube

Sennheiser HD 620S vs Sonos Ace Ultra: frequently asked questions

Is the Sennheiser HD 620S or the Sonos Ace Ultra better?

Real owners rate these about evenly: 58% of 93 Sennheiser HD 620S owners recommend it, vs 56% of 18 for the Sonos Ace Ultra.

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.

Who should get the Sonos Ace Ultra?

Owners point the Sonos Ace Ultra at sonos soundbar owners who want to watch TV on headphones, and original Ace owners who want more bass.

What do owners complain about?

The most-cited downside of the Sennheiser HD 620S is treble can be harsh, bright, or metallic-sounding, especially in the upper registers and vocals. For the Sonos Ace Ultra, it's the TV audio link to a Sonos soundbar drops out, picks up static, or fails to connect for a few owners, and one returned a pair over it.