Hi-Res Audio, as defined by The Recording Industry Association of America (and its Consumer Electronics Association, Digital Entertainment Group, and Recording Academy Producers & Engineers Wing partners), is "lossless audio capable of reproducing the full spectrum of sound from recordings which have been mastered from better than CD quality (20-bit/48kHz or higher) music sources which represent what the artists, producers and engineers originally intended." In other words, Hi-Res Audio aims to deliver sound that comes close to what you'd hear in a recording studio. That's a big promise. Tim Gideon, PCMag Contributing Editor and resident audio expert, is also somewhat skeptical, but from a logistics point of view.