Hello Josh
DVD Audio is a high resolution multi-channel or stereo format which is completely different than the video DVD. I don't know of any Mini-HiFi system that plays DVD Audio. Some DVD Audio disks have Dolby Digital 5.1 tracks that will play on regular DVD players, but keep in mind you will be playing the DD tracks, not the original high resolution tracks.
Your best bet if you want to get a universal player than can handle DVD Audio and SACD (Super Audio CD, the other competing high resolution format). Contrary to what others may tell you, Univeral Players don't have to be expensive. I own a Pioneer DV-578-A with can play these new formats with good sound for only $149, and a Denon DVD-1920, which is very high quality and goes for $350. You also need to get a good component stereo and good speakers to fully appreciate the better sound. Denon and Pioneer also have good receivers. Speakers, I recomment you audition the Paradigm Atoms, the PSB, NHT and B&W 3 series. They will give you great sound for very little money. Lots of bang for the buck here. Stay away from Bose and Boston Acoustics; they will be expensive and you will grow tired of their sound after a while.
If you like classical music you need to be aware that most of it comes in SACD's not DVD Audios. Since the better high resolution sound is appreciated only in acoustic music like classical or some jazz, most mainstream stores will not carry these fomats, but there are online stores like acousticsounds.com and archivmusic.com which specialize in these formats and carry many good labels like Ondine and Telarc.
Happy listening!
QUOTE(JoshVan @ Oct 25 2006, 23:09)

Hey, I'm new here...
Am currently debating whether or not to buy a new, huge Mini HiFi system, or a DVD 5.1 Surround Sound System on which to listen to DVD Audio. Is it worht buying DVD system to listen to DVD Audio? Do you lose sound quality on the DVD system when your listening to CDs?
Any help you can give me would be much appreciated./
Josh