Bowers & Wilkins Pi6

Audiophile dream sound wrapped in a package that's annoyingly unpolished. If you put music above all else, buy it; if you want a no-headache experience, walk away.

What surprised us most is how B&W crammed reference-level audio into something this tiny. Out of the box, the Pi6 delivered a huge, airy stage and instrument separation that challenges the Sennheiser MTW4 — and that's not a compliment we toss around. But the bubble bursts when you move: Bluetooth dropouts plagued our testing whenever the phone was in a pocket or bag, something we didn't see with the Sony WF-1000XM5. And while our database ranks ANC at the 97th percentile, real owners consistently say it's just adequate — quiet cafes fine, bus engine roar still present. The sound brilliance is undeniable, but the rough edges are impossible to ignore.

The obvious rival is the Sony WF-1000XM5: Sony delivers better ANC, a more reliable connection, and longer battery life, but its sound can't match the Pi6's air and separation. Sennheiser's Momentum True Wireless 4 comes close in audio fidelity while being far more polished overall — and its call quality actually works. Bose QuietComfort Ultra get the noise cancelling crown but sound a bit clinical next to B&W's warmth. For pure sonic bliss, the Pi6 is a gem; for everything else in one package, the Sony or Sennheiser are smarter buys.

At $338 this thing is a tough recommend; at $189 it's a borderline steal if you worship sound. The price spread across stores is wild, so hunt for that low end. If you pay more than $230, you're leaving money on the table given the compromises.

The Bowers & Wilkins Pi6 is a rare beast: a true wireless earbud that sounds so good it'll ruin your over-ear headphones for a week. That 12mm bio-cellulose driver is no marketing fluff — it pulls detail and soundstage out of tracks you thought you knew. And while the spec sheet screams premium (aptX Adaptive, 24-bit audio, 97th percentile ANC), the real-world experience unearths a pile of small frustrations that chip away at the joy. If you can live with finicky connectivity and a case that feels cheaper than a $30 earbud, the sound will hook you. For everyone else, it's a tougher sell.

If you need rock-solid connectivity on a run, microphone quality that won't embarrass you on a call, or battery life that lasts longer than a workday, skip these. The Sony WF-1000XM5 is a far more polished all-rounder that still sounds excellent. And if sound is truly your only god, consider the Sennheiser Momentum True Wireless 4 — nearly as brilliant sonically but with far fewer headaches.

Bowers & Wilkins created a flawed masterpiece. The Pi6 is for the listener who will forgive every connection hiccup and that questionable case because the music moves them in a way the Sony or Bose simply can't. If that's you, grab it at the lowest price you can find and don't look back. For anyone who needs a dependable daily driver for calls, commutes, and workouts, the WF-1000XM5 is the safer bet.