Dali IO-12 203122

The DALI IO-12 delivers some of the best wireless sound we've ever heard, with a wide soundstage and zero-distortion clarity thanks to its SMC drivers. But at $1,700, the flaky connectivity, subpar call quality, and occasional build issues make it a tough recommendation unless you're a sound-first purist. If you worship audio and can live with quirks, these are incredible; if you want a complete package, look elsewhere.

The sound is, as expected, the star of the show. Through our testing, these headphones deliver a spacious, detailed presentation that makes most wireless competitors sound a bit claustrophobic. Bass is deep and textured without bleeding into the mids, and the treble has a crispness that reveals subtle cymbal work and room acoustics. The SMC tech isn't just jargon; it keeps the noise floor silent and transients sharp. However, the noise cancellation, while effective, doesn't offer the adjustable modes or transparency smarts you get from Sony or Bose. The microphone is genuinely disappointing for calls, picking up voice but also every gust of wind and background rustle in a way that feels unacceptable at this price. Wireless performance is the real headache. We experienced occasional dropouts and a general lack of stability that simply shouldn't happen with aptX Adaptive on a premium headphone. Battery life at 35 hours is solid, but you'll find longer runtimes for a third of the cost.

Stacked against the Sony WH-1000XM6, the DALI obliterates it in soundstage and detail, but the Sony fights back with smarter ANC, reliable multipoint connectivity, and a price tag that's less than a quarter of the IO-12. The Bowers & Wilkins Px8 S2 feels like the closest competitor, with a similarly luxurious design and lively sound, and it actually delivers more polished call quality and build consistency. The Sennheiser Momentum 4 offers a much better all-around package for a fraction of the cost, though it can't quite match the DALI's sheer resolution. And against the Bose QuietComfort Ultra, the DALI's ANC is mediocre and its wireless connection looks primitive. The IO-12 exists in a niche where you accept compromises everywhere except the sound, and that's a trade-off few headphones at this price ask you to make.

Honestly, the value argument is tough. At $1,700, you're entering the realm of true high-end audiophile gear, where every detail should be buttoned up. The sound is exceptional and genuinely competitive with wired reference headphones, but the build inconsistencies, weak microphone, and unreliable wireless performance are hard to excuse. If you only care about audio quality and plan to use these mostly wired, they might justify the cost. For everyone else, the same budget buys you a top-tier DAC, amp, and a separate pair of superb wireless headphones with money left over. Pure sound lovers will adore them, but the average listener will feel the price doesn't match the overall experience.

The DALI IO-12 is a statement piece for audiophiles who want reference-grade sound without being tethered to an amp. At around $1,700, you're paying for that stunning SMC driver technology, a real leather headband, and the promise of hearing your music exactly as the artist intended. This isn't a mass-market noise canceler, it's a luxury listening instrument that just happens to be wireless. But that price tags sets expectations sky-high, and unfortunately, the IO-12 stumbles in a few areas that make the ownership experience less than flawless.

What's fascinating is how DALI managed to cram true hi-fi performance into a pair of Bluetooth headphones. The patented Soft Magnetic Compound magnets cut distortion to nearly zero, and the sound is wide, articulate, and deeply satisfying. You can even use them as passive wired cans with a dedicated amp. But while the audio is the main event, the supporting acts, like call quality and wireless connectivity, feel like afterthoughts. For this kind of money, you expect polish on every front, not just the soundstage.

Skip these if you need a reliable all-rounder for calls, commuting, or true wireless freedom. The microphone is bad, the connectivity can be frustrating, and the build issues some owners face are unacceptable at this price. If you want luxury wireless headphones that just work everywhere, get the Bowers & Wilkins Px8 S2 or the Bose QuietComfort Ultra instead.

The DALI IO-12 is for the uncompromising audiophile who values absolute sonic fidelity above all else and is willing to forgive the rough edges. If you've got a dedicated headphone amp and want a wireless option that still sounds reference-worthy, these will delight you. But if you need a headphone that handles calls, stays connected flawlessly, and feels bulletproof for daily use, this isn't it. The IO-12 is a specialist tool, not a daily driver.