|DVD-Audio||Super Audio Compact Disc|
|Digital Coding||Linear Pulse Code Modulation (LPCM)||Direct Stream Digital (DSD)|
|Bit Rate||Option of 16, 20, or 24 bit||1 bit|
|Frequency Response||DC-96kHz/channel at 192kHz sampling||DC-100kHz/channel|
|Disc Type||CD-size, single-sided or dual-sided, with up to two high-density layers per side; written spec is silent on inclusion of Redbook CD layer, but not prohibited||CD-size, single-sided, choice of one high-density layer, two high-density layers, or one HD layer paired with one Redbook CD layer|
|Lossless Compression Technology||Meridian Lossless Packing (MLP) (about 2:1 data reduction, option on disc, mandatory in player)||Direct Stream Transfer lossless packing (2:1 data reduction, optional on disc)|
|Number of High-Density Channels||Up to six full-bandwidth 96kHz/24-bit channels for a multi-channel program (plus optional 2-channel mix of the multi-channel program residing on the same high-density layer for playback on 2-channel systems such as portables); OR 2-channel 192kHz program at 16, 20, or 24 bits||Up to six channels of DSD material for a multichannel program (plus optional 2-channel DSD mix residing on the same high-density layer for playback on 2-channel systems). This is in addition to an optional Redbook CD layer|
|Maximum Playback Time Examples (on one layer, with compression, depending on material compressed)||77-123 minutes of 6-channel 96kHz/24-bit material, OR up to 136 minutes of 2-channel 192kHz/24-bit material, OR 67 minutes of 5-channel 96/24 material plus 2-channel 96/24 version of same material on the same player.||Up to 74 minutes of 2-channel DSD w/o lossless packing plus up to 74 minutes of 6-channel DSD w/ lossless packing. (Lossless packing of 6-channel material needed to accommodate both DSD version on same player.)|
|Multichannel-to-Two-Channel Fold Down||Smart Content (artist adds data to each multi-channel song to instruct player to mix down each song to 2 channels in real time; optional on disc, mandatory in player.||Not Available|
|Future Coding Options||Coding such as DTS or DSD permitted, if approved by DVD Forum as long as LPCM version resides on same layer for compatibility with all DVD-Audio players||Not Available|
|DVD-Video Player Compatibility||Step-up "universal" DVD players will play DVD-Video and DVD-Audio discs; Step-up DVD-ROM players also to play DVD-Audio discs||Not addressed in spec, but decision left up to each manufacturer to build DVD-Video players that incorporate SACD playback. Some consumer-grade suppliers intend to offer all-in-one players for CD, DVD-Audio, DVD-Video, and SACD.|
|Other Optional Features||Song titles, lyrics, and graphics; multiple still pictures per song; full-motion video content conforming to DVD-Video standard (reducing total disc playback time) for playback on universal and DVD-Video Players. DVD-Video music video discs are allowed to offer bonus 2-channel LPCM audio tracks playable on DVD-Audio-only players||Song titles, lyrics, and graphics, multiple still pictures, full-motion video permitted, but video format not specified.|
Blu-ray is another potential high resolution format in that the Blu-ray 3.0 profile is an audio only format. However it remains to be seen if any substantial content will actually ever be released.
There are of course a growing number of great Blu-ray concert discs now available which have high resolution audio encoded—as well as a 1080i or 1080p video. Obviously 1080p is preferable! Of course to see and hear these you need a home theater set-up. To learn more on that topic click here and here.