Real owners lean toward the Sennheiser HD 650: 75% of 316 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
“What an incredible difference they make to everything I had before! You can listen to a track and hear subtle details that you did not even know they existed. Wow!”— @marco83 on YouTube
“HD650 with a bum driver, but I was able to solider the voice coil back on, so they work normally again. I had a pair 15 years ago and always regreted selling them.”— kindofbluetrains on Reddit
“I find the HiFiMan Sundara & the Fiio FT1 Pro both more useful for mixing - the Sennheisers have a much more condensed/flat sound with less bass extension than either of those”— @reallyoldcob on YouTube
“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
Real owners lean toward the Sennheiser HD 650: 75% of 316 owners recommend it, vs 47% of 154 for the Sony ULT Wear.
Owners point the Sennheiser HD 650 at listeners wanting warm, non-fatiguing sound for long sessions, and vocal, acoustic, jazz, and classical lovers.
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.
The most-cited downside of the Sennheiser HD 650 is rolled-off, light sub-bass that often needs EQ. 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.