Axiom Home Page Forums General Discussion Technical Questions Analog or digital?

I have a Harman Kardon FL8380 cd changer, and a Harman Kardon AVR-120. The cd changer has both analog and digital outputs.

Apparently both the cd player and receiver have excellent DACs. I've been using analog, but I realize that my interconnects were very cheap, so until I got better ones, I switched to digital (since I have a good digital cable).

So: How do I know which is better? Will I be able to hear the difference? So fat I'm liking the digital connection better because it sounds "louder" at the same level of volume.