Good idea also jeff64. Having options is nice. So far my IRV66 has worked great. I believe the only problem I found from the factory was the DVD player's audio output. They had the HDMI cable from the IRV66 connected to HDMI#3 on the TV. If it is not connected to HDMI#1, my DVD player had no video/audio on the TV. I had DVD selected on the "SRC" button. It also didn't seem to matter which input the TV was on (HDMI 1,2,or3). Strange, but HDMI #1 on this TV (Furrion=factory model) seems to be the master channel that the TV will automatically switch to when it senses an input there. I guess that is common on other TVs.
The only other thing I have noticed so far on the IRV66 is that the built-in frequency response filter settings (Rock, POP, Movie, Concert, etc.) REALLY affect the sound output volume and quality. You can get some pretty good quality sound by playing with this and the Bass/Trebal settings. One feature I don't like is that all 3 speaker zones come on when turning it on. Was hoping that Zone 1 is default (Living room) and you had to manually select zone 2 or 3 if you wanted to. That would have made more sense to me. Turning off the outside speakers (zone 3) and the bedroom (zone 2) every time will get old.
Jim and Connie w/3 lb. Chihuahua= Nugget
2016 Rockwood Ultra-Lite 2608WS
2004 Dodge Ram 2500