Over-Ear Headphones · owner-verdict comparison
Sennheiser HD 650 vs Sennheiser HD 660S2: what real owners say Real owners lean toward the Sennheiser HD 650: 75% of 316 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
75%of 316 owners recommend
75% recommend · 11% neutral · 14% don't
Owners praise
Natural, balanced tonality that just "sounds right" Lush, lifelike midrange and vocals Non-fatiguing for hours of relaxed listening Owners complain about
Rolled-off, light sub-bass that often needs EQ Full owner report → 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 → What Sennheiser HD 650 owners say “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!” “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 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.” The web's most robust real-owner review aggregator — real opinions from people who actually own the product, every verdict sourced, nothing paid.
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