Having to drive two sets of speakers from the same amp limits the possibilities somewhat. In this case you might actually want to go for entry-level separates, if only to choose a preamp with two sets of outputs so you could buy and drive a second power amp later on.
I wouldn't look at Cambridge or NAD, though. I would see if I could find gear by Linn for this, or perhaps Rotel. Linn are good at multi-room systems. Used, a Wakonda or Kairn preamp and an LK85 or LK140 (much better-sounding) might work. I'm afraid you'll have to ask a dealer or check Linn's site to see if these amps will do multiple speaker sets.
For the same money, though, you would get better sound from many integrateds. I would forget tubes unless I had technical help, because of the multi-speaker requirement. If I could find some way to live with only one set of outputs, I would want to try an integrated by YBA, Sim Moon, Vecteur or maybe that Portal.
I wouldn't look at Cambridge or NAD, though. I would see if I could find gear by Linn for this, or perhaps Rotel. Linn are good at multi-room systems. Used, a Wakonda or Kairn preamp and an LK85 or LK140 (much better-sounding) might work. I'm afraid you'll have to ask a dealer or check Linn's site to see if these amps will do multiple speaker sets.
For the same money, though, you would get better sound from many integrateds. I would forget tubes unless I had technical help, because of the multi-speaker requirement. If I could find some way to live with only one set of outputs, I would want to try an integrated by YBA, Sim Moon, Vecteur or maybe that Portal.