Bose announced a refresh of its QuietComfort Ultra Earbuds over the summer and now it’s back with an overhaul of its flagship noise-canceling headphones. The company has employed the second-generation moniker once again on the new QuietComfort Ultra Headphones, but this time the list of updates is a bit more substantial. Bose says it made tweaks to audio performance, active noise cancellation (ANC), battery life, power efficiency and more. Surprisingly, the company managed to make its upgrades without raising
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