I've owned the NAD T747, and while it is a very nice unit for the price, I think the Bel Canto would outperform it handily. Adding a NAD power amp would do pretty much nothing to improve the sound, as the Rainmakers are relatively easy to drive.
Suggest you give the Bel Canto a listen first, as there are lots of other good choices at that price point. For example, a variety of integrated amps with a separate dac. But as a one box solution, your are thinking in the right direction.
Suggest you give the Bel Canto a listen first, as there are lots of other good choices at that price point. For example, a variety of integrated amps with a separate dac. But as a one box solution, your are thinking in the right direction.