SACD’s offer superior sound. “Though the discs engulf the listener with sound from five different channels, delivering depth, dimension and ambience that were barely imagined 20 years ago, they have traveled the world for the last five years like cruise missiles, slightly below the radar but successfully seeking their small, specific targets (or consumers). Some quarters of the often-impatient recording industry appear to be giving up on the technology. Others, less committed to immediate profits, see vast potential and won’t let it go.”