Two or three years ago I went down to Son Idéal in Montreal to listen and compare entry-level amps and CD players. We'd had a fire and the systems in the bedrooms were going to be replaced.
I listened to two Cambridge units, the 540 and 640, and compared them with the NAD C320BEE. I preferred the NAD. I thought it was smoother overall. Both Cambridges had some roughness in the highs and upper mids, although the more expensive 640 had a bit less.
So we got three NAD C320BEE integrateds. They have been working just fine since we got them.
I listened to two Cambridge units, the 540 and 640, and compared them with the NAD C320BEE. I preferred the NAD. I thought it was smoother overall. Both Cambridges had some roughness in the highs and upper mids, although the more expensive 640 had a bit less.
So we got three NAD C320BEE integrateds. They have been working just fine since we got them.