Bowers & Wilkins' first wireless headphones with active noise-canceling are almost perfect.

"Acoustically perfect" Not quite yet in my books I'm afraid. Given B&W's audiophile pedigree, I feel the PX is a bit of a missed opportunity for what is a ready market for fans of the brand and those looking for a solid pair of noise-cancelling headphones for travel to invest in.

The slightly heavy bass may not appeal to everyone, but B&W's PX is still money well spent, even if you primarily use it as a set of wired headphones. But the PX will also earn its keep when travelling, thanks to its effective noise-cancellation that still manages to provide a detailed, attractive...