Real owners rate these about evenly: 55% of 197 DT 770 Pro owners recommend it, vs 56% of 18 for the Sonos Ace Ultra.
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
“I think these sound leagues above the original Ace tho thanks to that custom dual-ring magnet motor. The bass is deep and tactile while the sound stage is far more wide and open in comparison to its predecessor.”— @ventus77777-h on YouTube
“I have the Ace Ultra and i love them....especially with my Sonos Theatre system...i had the first ones and i like these ones more....no complaints whatsoever”— @SpankyGolfaddict65 on YouTube
“do NOT buy these for TV audio swap. the feature sucks. source: i own these headphones.”— @Beanz0911 on YouTube
Real owners rate these about evenly: 55% of 197 DT 770 Pro owners recommend it, vs 56% of 18 for the Sonos Ace Ultra.
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 Sonos Ace Ultra at sonos soundbar owners who want to watch TV on headphones, and original Ace owners who want more bass.
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 Sonos Ace Ultra, it's the TV audio link to a Sonos soundbar drops out, picks up static, or fails to connect for a few owners, and one returned a pair over it.