I used to own both the Cambridge 540A v2 and the NAD C326BEE.
They're both very nice budget amps, and I don't think you could go wrong with either.
The packaging and chassis on the Cambridge look nicer, but the NAD has slightly higher quality parts inside (bigger power supply caps, relays instead of IC switching, etc).
I think the audible differences between the two are overstated and are mostly a result of the one real difference I did notice, namely, that the volume controls track quite differently. In other words, put them both at the 9 o'clock position, and the NAD was much louder than the Cambridge. By the 12 o'clock position, they were closer in loudness. I think this alone explains a lot of the sonic differences being attributed to them, ie, people are hearing level differences more than actual sonic differences.
They're both very nice budget amps, and I don't think you could go wrong with either.
The packaging and chassis on the Cambridge look nicer, but the NAD has slightly higher quality parts inside (bigger power supply caps, relays instead of IC switching, etc).
I think the audible differences between the two are overstated and are mostly a result of the one real difference I did notice, namely, that the volume controls track quite differently. In other words, put them both at the 9 o'clock position, and the NAD was much louder than the Cambridge. By the 12 o'clock position, they were closer in loudness. I think this alone explains a lot of the sonic differences being attributed to them, ie, people are hearing level differences more than actual sonic differences.