Need to improve my CD Changer - is that possible?

Hi,

I know that CD/DVD changers are scorned at but I do have one and I guess am stuck with it(Sony 400 CD Changer). I want to improve the quality if that is possible. Will adding a DAC improve the quality? If so which DAC should I go for. Budget isn't high - maybe $250 - $400 but let's say a DAC that is the best value for the money. The Sony CD changer does have a Digital Out (but no optical out).

The reason I went for the CD changer is to store the cds and forget them, instead of changing the cds in a single cd changer. I do own better cd players like the Jolida JD-100 and a Teac Reference cd player. But again the idea is to have a load it and forget it path. In fact I am even thinking of buying the Sony 400 DVD changer (either the regular or the ES model), put the cds in the form of DVD-MP3. Purists may scoff at the idea but I have realized that I listen more from the Sony CD changer. Nowadays don't have the time that I used to have for doing critical listening.

So in short - will DAC help? if so which one? and finally the idea of buying a sony dvd-changer for DVD-MP3 - could this route also be improved by adding dac or other means?

Best Regards,

Harry