NAD C 275 Bee

I owned several pieces of NAD equipment over the years, up to about five years ago, when I transitioned to PS Audio & McIntosh.  I also have been enjoying a pair of Focal Sopra No2's since they were introduced.

I find that the McIntosh amps are a really good match for the Focal tweeter, especially if they have an autoformer in the output stage.  I have not auditioned the Sopra's with that particular NAD amp, but did hear them driven by the M2, which sounded "fast", but I found fatigue setting in fairly quickly with that combination.

I have a McIntosh C2500 tube preamp and MC452 solid state power amp, and with that combination can listen for hours with no fatigue.

...and another thing...

The Sopra's are listed as 8 ohm speakers, but have a minimum of 3.1 ohms impedance.

...or two...

Each NAD setup I've had has had a piece which failed and had to be serviced.  My last NAD setup was their "Masters Series", and the  SACD transport failed and needed to be replaced, the display on the integrated amp went dark.  Before that I had an NAD CD player and receiver, one channel went out on the CD player, the other on the receiver.  Before that I had an NAD receiver and the volume control would dramatically change the channel balance at different volumes.  Too bad, because I really enjoyed the equipment and its sound.  No problems since I switched to McIntosh equipment.