Emotiva switcher
On the simple switcher, it connects the incomming wires to the output so there shouldn't be any concern over HDMI versions. If it is doing a repeater function that it might not be compatible with the latest HDMI revision, however, all the recent updates relate to audio formats and connections from the source to the receiver. If you are using the HDMI switching on one of the current EMO products then it does not do any HDMI audio processing.