Real owners rate these about evenly: 60% of 55 Grado SR80x 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
“SR80x (120€ new) was my first audiophile headphone over two years ago. They were so good that within a week I returned them to upgrade to SR225x”— Hunter-97-G on Reddit
“Grado SR80s were my first decent pair of headphones too, and I still love them - still have them and listen to them something like 15 years later.”— srmd22 on Reddit
“Using chinese components. And a lot of glue... You'd think with all that American Engineering, we could not use Glue, and instead use... maybe screws?”— KaosC57 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: 60% of 55 Grado SR80x owners recommend it, vs 56% of 18 for the Sonos Ace Ultra.
Owners point the Grado SR80x at first-time audiophiles wanting an affordable, exciting-sounding upgrade from stock earbuds, and listeners who love an energetic, forward, treble-tilted sound 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 Grado SR80x is glued-together build (drivers, gimbals, rodblocks, headband) that owners view as flimsy, breaks over time, and often requires DIY hot-glue or aftermarket-part repairs. 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.