- Which has better noise cancelling?
- Both use active noise cancelling, and Bose has the longer track record in this category. The Ace is Sonos's first headphone, so its ANC has less history behind it. Try both on a noisy commute if you can.
- Is the Sonos Ace worth $27 more than the QC45?
- Only if you own a Sonos soundbar or want spatial audio with head tracking. Otherwise the QC45 covers noise cancelling, comfort and wired listening for less.
- Which lasts longer on a charge?
- The Sonos Ace, at up to 30 hours versus 24 hours for the QC45. The Ace also charges faster: 3 minutes gives 3 hours, while the QC45 needs 15 minutes for the same.
- Can I use either one wired?
- The QC45 includes a detachable 3 ft cable for wired listening. The Ace is listed as Bluetooth only, with no detachable cable noted.
- Which is better for TV watching?
- The Sonos Ace, if you have a Sonos soundbar. TV Audio Swap moves soundbar audio to the headphones instantly. The QC45 pairs with select Bose smart soundbars but has no equivalent swap feature.
- Which is better for the gym or rain?
- The QC45, which is rated water resistant. The Ace has no ingress protection rating, so sweat and rain are a risk.
