I have a very early (probably 15-20 yr old) versatile Niles "Speaker Selector/Volume Control" box Model SVC-4 which allows two separate amps and 4 sets of speakers to be attached. Each speaker has a volume control. You can select either amp A or Amp B to drive a particular speaker or leave that speaker off. On the front of the unit there is an "in or out button" for each amp marked "leave out for "1 pair 4 ohm or 1-2 pair 8 ohms" or push in for "2-4 pair 4 ohm or 3-4 pair 8 ohm speakers on that particular amp. The only down side is that the speaker wire connector terminals on the back are a push down spring tab for inserting a small bare wire (like on circa 70s Marantz Receivers). It cannot take spades or banana plugs. Niles may make a more modern version now. Great versatility but obviously not for ultra critical listening.
Speaker A/B Option With Separates?
Forgive me for a possibly naiive question, but does duch a thing exist? I'm thinking of going this route (tubed preamp + ss amp), but would like to be able to drive my kitchen speakers as well as my living room speakers with the same pre/amp combo. I see that some amps have two sets of binding posts, but I don't see any Speaker A/B switches on the fronts. Any insights would be appreciated.