As someone who had the CDM1SEs, they are quite good, although I would recommend a beefier amp. They're a little hard to drive. Your NAD can actually do 35W into 8 ohms, but I personally, would want a bit more headroom. For reference, I was running them with the B&K AVR 202 which gave 125WPC. Seems it's better to have an amp that's capable of delivering more power than the speakers are rated for, than giving less (in terms of potential damage).