Two incompatible high-resolution audio formats, Super Audio CD (SACD) and DVD Audio (DVDA), were introduced in 2000. Both offered surround-sound music at a quality that approaches the original studio master recordings from which they are made. Both formats could be added to new DVD players for an additional $25 to $250 per format, depending on the quality. SACD was originally supported by Sony. While Sony has abandoned the format, it has since won support from numerous classical music and jazz labels that sell in small numbers to "audiophiles." DVDA has been abandoned by its backers. Why do you think high-resolution audio remained a niche product?