2 separate sets of speakers one amp

I have the Luxman as55. Found it on eBay from a guy about of Japan. It is built like a tank and works perfectly for switching between my 2 amps to a single set of speakers, It works both ways. I believe they have been discontinued.  But are not hard to find. Original price was like $1000.00 I paid $360.00 for mine in perfect condition. I would highly recommend, I can’t imagine there is a more well made unit available.

@georgemunn how is the Lux switcher powered, if at all?  Or does it simply sit between the amp and the speaker cables?  I'm curious.  

@rpeluso It is not powered it is a simple switch weighing about 8ib. The switching paths are made of something like .9998 percent pure copper. 

The luxman looks nice looks like I'll have get another set of cables to go from amp to switch didn't think about that 

I use a NEOHIPO ET30 and it works well.  Has a remote to switch between up to 2 amps and 2 sets of speakers.  It also has 2 light up meters that you can adjust for the swing sensitivity and color.  A poor man’s Mc meters if you will.  Got mine on Amazon with free returns but kept mine.  I switch between 2 sets of speakers with one amp.