Best known for the impeccable attention to detail it lavishes on loudspeakers and, more recently, high-end headphones, Bowers & Wilkins brought its first true wireless headphones to market in 2021. The British audio mavens are now about to introduce their second-generation in-ear active noise-cancelling headphones. We haven’t heard them, yet, but we’re glad to see a minor tweak to their name: The Pi7 S2 replace the PI7, and the Pi5 S2 replace the PI5. If you thought the original earbuds were named P17 and P15 respectively—as we first did—you’ll understand why B&W has changed the uppercase “I” …