Originally Posted by keyboardcat
Nad c 545bee for $500.00 and Nad c515bee for $300.00 What is the difference between them?
Sound quality wise? Nothing.
Literally, what you see is what you get!
Is one that much better then the other for the two hundred dollar difference?
Depends on your personal values. For example, the $500 gives more bragging rights.
I don't know a lot about expensive CD players.
People who really know about them generally avoid them.
Does the Nad Cd player sound much better then a old fisher CD player, or old Denon CD player?
The old player may have sound quality issued due to parts degradation.
For example I once bought a more costly Sony CD player that had fancy looking parts inside it that had "Audiophile grade" stenciled on them. Two years later those very parts had lost more than 80 % of their performance and made bass coming out of the player's analog outputs sound thin.
Can't really tell about that old stuff unless you put it on the test bench. However, that all said, once on the test bench most of it is still in great shape.