Over-Ear Headphones · owner-verdict comparison

HiFiMan Sundara vs Sennheiser HD 620S: what real owners say

Real owners rate these about evenly: 53% of 352 HiFiMan Sundara owners recommend it, vs 58% of 93 for the Sennheiser HD 620S.

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

HiFiMan Sundara

53%of 352 owners recommend
53% recommend · 30% neutral · 17% don't
Owners praise
  • Exceptional value for the price, repeatedly called the best bang-for-buck headphone in the hobby, punching well above its price bracket
  • Responds dramatically well to EQ, with many owners saying a modest EQ profile transforms them into a much more detailed, bass-capable headphone
  • Wide, spacious soundstage with strong instrument separation and detail retrieval that owners compare favorably to pricier flagships
Owners complain about
  • Inconsistent build quality and QC, owners report cracked headbands, dead or channel-imbalanced drivers, and units failing anywhere from days to a couple years in
  • Bright, sometimes sibilant treble that a meaningful minority finds fatiguing or 'too bright' out of the box
  • Thin sub-bass and lacking low-end impact without EQ, described as anemic by several owners
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 HiFiMan Sundara if
  • ✓Budget-conscious audiophiles wanting near-flagship detail and soundstage for a fraction of the price
  • ✓Listeners willing to EQ, since owners say a bass shelf and treble tweaks transform the sound
  • ✓Music listeners who prize detail, instrument separation, and vocal staging over bass slam
  • ✓Owners who treat them gently at a desk, since many report years of trouble-free use
Skip it if
  • Bassheads, since many owners find stock bass thin or anemic without EQ
  • People sensitive to treble brightness or sibilance, a recurring complaint
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 HiFiMan Sundara owners say

“They won't break. I've got a opair of the 2020 Sundara's and a recently purchased set of Arya Stealth. They're both perfect. Sound wise and build quality too.”
— Kevbassman on Reddit
“Absolutely the Sundara gives you way more than its price suggests clean planar bass, great detail and a neutral tuning that honestly captures most of what people love about higher end cans.”
— Ornery-Ad-9419 on Reddit
“I think the. Sundara is super overrated. It's fine, nothing special, has some quirks/problems that many better headphones in and above its class don't.”
— drwafflefingers 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

HiFiMan Sundara vs Sennheiser HD 620S: frequently asked questions

Is the HiFiMan Sundara or the Sennheiser HD 620S better?

Real owners rate these about evenly: 53% of 352 HiFiMan Sundara owners recommend it, vs 58% of 93 for the Sennheiser HD 620S.

Who should get the HiFiMan Sundara?

Owners point the HiFiMan Sundara at budget-conscious audiophiles wanting near-flagship detail and soundstage for a fraction of the price, and listeners willing to EQ, since owners say a bass shelf and treble tweaks transform the sound.

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 HiFiMan Sundara is inconsistent build quality and QC, owners report cracked headbands, dead or channel-imbalanced drivers, and units failing anywhere from days to a couple years in. For the Sennheiser HD 620S, it's treble can be harsh, bright, or metallic-sounding, especially in the upper registers and vocals.