I use an amplifier switch made by Dodocus in Germany (dodocus.de). It is super high quality. As of a couple years ago it cost $460. Well worth it.
Amplifier and Speaker A/B switcher
I'm looking for a well made switcher that has the ability to switch between two amps (rca cables) and two speaker pairs (using banana plugs). I am only seeing devices made in China and they don't appear to be of very good quality. Can anyone suggest a high quality device safe for my equipment and not to degrade audio quality? Thanks.