Would the NAD M51 be an upgrade to EE Dac plus


Or would it just be a different technology, sound
abruce
Lots of info on this Aussie forum where they compared the Nad to several well regarded dacs:

http://www.stereo.net.au/forums/index.php?/topic/40613-nad-m51-listening-impressions/
I have owned both. The M51 is better than the EE DAC Plus in every way. The M51 is simultaneously more relaxed and resolved -- effortless in its presentation, smooth, dynamic, and transparent. Is also stellar direct to amplifier.

For $2K list, it's a steal.