I use an RCA
switcher and speaker
switcher that perform instantaneous switches between my various AVRs/ampifiers/DACs/speakers. You know, I hadn't heard my Marantz since Feb 2022 when I packed it away to move to the new place. I was really expecting it to sound shit now that I am aware of the reviews for that series of Marantz AVR here on the ASR website. But after toggling back and forth for several hours and forgetting which source was A and which was B, I realized that I was enjoying both the Rotel and Marantz without really paying attention to which amp I was listening to. Then I started to think maybe I wasted additional funds on my Rotel lol. Moral of the story, the Marantz sounds really good. It's unfortunate that in this day and age, we can't look at the data for a finite suite of tests and conclude that a specific AVR sounds bad. We still have to actually listen to it properly, for hours, while A/Bing the unit with its competitors, with all other variable remaining constant (source, cables, room, speakers, levels, positioning etc)