High quality Speaker switch box for multiple amps?


Stupid idea, I know. But if I wanted to have 2 or 3 separate amps (NOT running at same time, of course) to choose from with 1 preamp. Is there a switch box (preamp to box, box to multiple amps with a,b, c switch, box to main speakers) that is of high quality and will have very minimal effect on sound? Of course I would keep same brand/model of speaker cable at all points. Just curious
aberyclark
Looks like I would need to separate "boxes" for this. One splitter for the preamp audio outs and one for speakers
You would have to build a custom box. I recommend Grayhill switches if you want something that won't completely destroy the sound. You'll pay a bit for one but they are some of the best for something like that.
Van alstine has a box that can switch all inputs and outputs and level match them. About $1500.00.