Real owners lean toward the Sennheiser HD 660S2: 61% of 231 owners recommend it, vs 55% of 197 for the DT 770 Pro.
Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score
“i'd say go for the Beyerdynamics since their only drawback is their harsh upper register of the frequency and nothing else. For the money, you can't beat them!”— chrissb34 on Reddit
“dt 770 100% and hyperx quadcast microphone! Best combo ever and "cheap"”— NervousNobody666 on Reddit
“The long term durability of these headphones seems to really depend on the climate where you live. When I moved to Florida the humidity and/or heat really caused them to start deteriorating fast.”— Lord_swarley on Reddit
Real owners lean toward the Sennheiser HD 660S2: 61% of 231 owners recommend it, vs 55% of 197 for the DT 770 Pro.
Owners point the DT 770 Pro at gamers and FPS players wanting wide, precise soundstage in a closed-back set, and home studio mixers/producers who value detail and don't mind a bright signature.
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.
The most-cited downside of the DT 770 Pro is sharp, peaky treble (the well-known 'Beyer treble') that many find harsh, sibilant, or fatiguing, sometimes causing headaches after 10-15 minutes. For the Sennheiser HD 660S2, it's dark, veiled or muffled-sounding presentation.