Guess CA wanted to pay you them because it's CA sound rather than pay Dirac for the license. I'm tempted to get a measuring microphone to "profile" my room, to see how biased I am as I consider the sound to be pretty OK. But it may be that I've never heard anything better. And maybe I want to stay in my happy placeI have heard that the basic Dirac does a lot because it’s at the frequencies most commonly affect by the room. Also it doesn’t seem the EVO is stable with 4ohm speakers
Regarding the stability when driving 4 ohm speakers, I think I may have experienced one freeze due overheating when I placed the DAC and AMP I was comparing it with on the EVO. My speakers are 6 ohm.