Not too old of a post so I will reply.
You will never get the same audio sound quality out of a DVD Player.
There are exceptions where you must have a Multi Sound System or a Home Theatre System.
There's not point in building a nice Multi Audio system only to us a DVD as the CD Player.
The Home Entertainment Systems out today can be awesome and you can get good, but not great sound from these, provided you are prepared to spend around $10,000.00.
The only way to obtain good or great sound from a CD is to use a specialized CD Player, such as Rega, Creek, etc.