There are inexpensive speaker/amp switch boxes available on Amazon. I got Bryan from https://www.zynsonix.com/ to build me a custom switch box which allows me to route two amps to single set of speakers and a sub. Added benefit, it has 4-pin balanced xlr taps for running hard to drive headphones.
Two amps into one pair of speakers
This is a newb question, but my friend has two integrated amps hooked up to his speakers, one McIntosh and a Prima Luna. One is connected with banana plugs and the other with spades. He said this will cause no problems as long as they are not both sending signal at the same time. Is this true. It just seems a little strange to me.
TaterMike