The Rega RS1's work and sound great with the Brio-R (never heard them with the NAD).
Another option that matches up with the Brio-R is the Tannoy DC4 (or DC6 if you stretch your budget a bit).
***Rega and Tannoy dealer disclaimer***
Another option that matches up with the Brio-R is the Tannoy DC4 (or DC6 if you stretch your budget a bit).
***Rega and Tannoy dealer disclaimer***