Over-Ear Headphones · owner-verdict comparison

Beyerdynamic DT 900 Pro X vs Sennheiser HD 660S2: what real owners say

Real owners lean toward the Beyerdynamic DT 900 Pro X: 71% of 234 owners recommend it, vs 61% of 231 for the Sennheiser HD 660S2.

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

Beyerdynamic DT 900 Pro X

71%of 234 owners recommend
71% recommend · 14% neutral · 15% don't
Owners praise
  • Pinpoint imaging for gaming
  • Great all-rounder for music and gaming
  • Detailed, fairly neutral sound
Owners complain about
  • Strong clamp needs breaking in
  • Flimsy headband peels and cracks
  • Bass-light for bass heads
Full owner report →

Sennheiser HD 660S2

61%of 231 owners recommend
61% recommend · 20% neutral · 19% don't
Owners praise
  • Lush, natural mids and vocals with classic Sennheiser timbre
  • Deeper, richer bass with much better sub-bass extension than the older 6x0
  • Excellent imaging and soundstage for gaming and movies
Owners complain about
  • Dark, veiled or muffled-sounding presentation
  • Loses the forward midrange magic of the cheaper 600/650
Full owner report →

Which should you buy?

Get the Beyerdynamic DT 900 Pro X if
  • ✓Competitive gamers needing precise footstep imaging
  • ✓Home producers mixing on a budget
  • ✓Listeners wanting a neutral, detailed sound signature
  • ✓Buyers who want great sound without a dedicated amp
Skip it if
  • Bass heads wanting deep, boomy low end
  • Anyone sensitive to strong headphone clamp force
Get the Sennheiser HD 660S2 if
  • ✓HD6x0 owners wanting more bass extension and treble sparkle
  • ✓All-day listeners who want a warm, fatigue-free sound
  • ✓Gaming, movie, and music all-rounder seekers
  • ✓Metal, rock, and EDM fans wanting fuller low end
Skip it if
  • Those wanting a wide, expansive soundstage over intimate presentation
  • Purists chasing the classic 600/650 midrange, which feels recessed

What Beyerdynamic DT 900 Pro X owners say

“I bought the 900 proX as my first high end headphone for mostly gaming and music. They caused me to spend another 2k on speakers and a schiit stack because id never heard such beatiful sounds. Worth it”
— @Lperry on YouTube
“900 sounds more natural, intimate and less fatiguing but it doesn't stage the same way.”
— Bret Halford on Head-Fi
“That joint is a huge weak point in my opinion.”
— @drewmorg. on YouTube

What Sennheiser HD 660S2 owners say

“I've had it for 5 years now and I still consider it the best of the 600 series”
— @o.f.ftrack3444 on YouTube
“They are my go-to primary headphones.”
— @scottlowell493 on YouTube
“At $250-$350 I would consider giving these a go at $600 they are a pass.”
— @mindhead1 on YouTube

Beyerdynamic DT 900 Pro X vs Sennheiser HD 660S2: frequently asked questions

Is the Beyerdynamic DT 900 Pro X or the Sennheiser HD 660S2 better?

Real owners lean toward the Beyerdynamic DT 900 Pro X: 71% of 234 owners recommend it, vs 61% of 231 for the Sennheiser HD 660S2.

Who should get the Beyerdynamic DT 900 Pro X?

Owners point the Beyerdynamic DT 900 Pro X at competitive gamers needing precise footstep imaging, and home producers mixing on a budget.

Who should get the Sennheiser HD 660S2?

Owners point the Sennheiser HD 660S2 at hD6x0 owners wanting more bass extension and treble sparkle, and all-day listeners who want a warm, fatigue-free sound.

What do owners complain about?

The most-cited downside of the Beyerdynamic DT 900 Pro X is strong clamp needs breaking in. For the Sennheiser HD 660S2, it's dark, veiled or muffled-sounding presentation.