Even if you don't plan to purchase SACDs, if you get a deck that supports that format, the built in DAC will probably need to be of higher quality, in order to decode the DSD content on the SACDs. When I was early in my journey to the higher end hardware, I purchased an NAD player and the detail I heard extracted from that unit, on "regular" CDs, was noticeably better, as a result of having a better DAC chip in the unit.