Most of the big recent news in audio has involved a seemingly endless stream of new surround sound formats. First came uncompressed multichannel Dolby TrueHD and DTS-HD Master Audio soundtracks on Blu-ray Disc. Then last year the listening experience reached new heights as Dolby ProLogic IIz and Audyssey DSX processing brought the vertical axis of our home theaters into play. Now it looks like the surround folks are finally taking a breather, which means we can swing the spotlight back over to stereo, where some big changes have been taking place.
