I know this is not the question that you asked ... but try a Music Hall MMF CD 25 with your NAD. I paired one with a NAD C320 BEE and it worked out very well ... absolutely stunning synergy. See my additional comments in my review of the NAD 320BEE .
Everything that I have read about the NAD (mostly all British press) says to go with the BEE version of the 521i.
Regards, Rich
Everything that I have read about the NAD (mostly all British press) says to go with the BEE version of the 521i.
Regards, Rich