I'm considering a 4 speaker option (2 stereo pairs) outside now and looking at some speaker selectors like
this one.
I don't understand how this product works. If it's not adding any amplification, then is it still safe on my amp? And is it just reducing the amount of power by splitting it?
For example, if I have 2 zones active -- and my amp is 75 watts per channel -- then am I now maxing out at 37.5 watts per channel?