Five months after the release of the enthusiastically received Px7 S3 headphones, and one day after the announcement that HARMAN has completed the acquisition of the brand’s parent company Sound United, Bowers & Wilkins has revealed its refreshed flagship, the Px8 S2. Building on the upgraded acoustic architecture of the Px7 S3 (our best overall headphone for airplane travel to this point), the Px8 S2 further refines true high-res playback. Shown in Warm Stone above (our photo) and Onyx Black below (theirs), the Px8 S2 features an upgraded chassis and motor like the Px7 S3, but swaps in 40mm carbon cones for the biocellulose drivers. Treble can convey a brushed-metal sheen when appropriate, but it never takes on sibilance while sketching cymbal decay and room reverb. The Px8 S2 is available now for $799.