Very nice review on the Emotiva/Dyn/CJ gear. Glad to know that the tweaks worked out for you. Based on your review the brightness that you experienced in some recordings when you used the NAD CDP is possibly digital glare. Such is the resolving ability of the Dynes. You hear every minute changes that you make in your signal chain. When you switched to analog plus tubes in the signal path the glare was reduced.
Will a DAC solve it? Possible. Will a sweeter sounding CDP do the trick? Again possible. I suggest cheaper alternative in Speaker cables but for now I highly suggest that you forget about the nitty gritty of things and just enjoy the sum of its parts. Put on your favorite tracks, open a bottle of wine and enjoy. you have one helluva system there Atty. congratulations.