Over-Ear Headphones · owner-verdict comparison

Sennheiser HD 660S2 vs Sony ULT Wear: what real owners say

Real owners lean toward the Sennheiser HD 660S2: 61% of 231 owners recommend it, vs 47% of 154 for the Sony ULT Wear.

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

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 →

Sony ULT Wear

47%of 154 owners recommend

47% recommend · 17% neutral · 36% don't

Owners praise

Big, punchy bass that owners who like heavy low end love
Noise canceling that owners rate highly
Strong value, with some owners saying it comes close to Sony's pricier XM models for much less

Owners complain about

Plastic hinges that crack or snap, often during normal handling, anywhere from a few weeks to over a year after purchase; some owners had a second pair break the same way, while others say a replacement has held up
The sound splits owners: many say it needs EQ tweaks to sound right, some find the bass overblown or muddy, and a few expected more bass than they got

Full owner report →

Which should you buy?

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

Get the Sony ULT Wear if

✓Bass lovers who want heavy, adjustable low end
✓Buyers who want strong noise canceling without paying flagship prices
✓Listeners willing to spend time tuning the EQ in the app
✓People with larger ears who want deep, padded earcups for long sessions

Skip it if

Anyone who needs headphones to survive daily handling for years without hinge worries
Listeners who don't want to adjust any sound settings

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

What Sony ULT Wear owners say

“I recently purchased the Sony ULT Wear and I love it!”
— @jamesbarlett246 on YouTube

“The bass is honestly pretty fun, sometimes I just wanna press a button and destroy the song I'm listening to.”
— @Pika915 on YouTube

“To be fair, I didn't hear hardly any difference. The ULTs fit my head better, but they looked much chunkier on my ears as the phones stuck out way more. I've decided to keep the XM4s and return the ULTs.”
— @1977ver on YouTube

Sennheiser HD 660S2 vs Sony ULT Wear: frequently asked questions

Is the Sennheiser HD 660S2 or the Sony ULT Wear better?

Real owners lean toward the Sennheiser HD 660S2: 61% of 231 owners recommend it, vs 47% of 154 for the Sony ULT Wear.

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.

Who should get the Sony ULT Wear?

Owners point the Sony ULT Wear at bass lovers who want heavy, adjustable low end, and buyers who want strong noise canceling without paying flagship prices.

What do owners complain about?

The most-cited downside of the Sennheiser HD 660S2 is dark, veiled or muffled-sounding presentation. For the Sony ULT Wear, it's plastic hinges that crack or snap, often during normal handling, anywhere from a few weeks to over a year after purchase; some owners had a second pair break the same way, while others say a replacement has held up.