Thanks a ton for the appreciation sirWow that’s a seriously stunning result! You should be really proud of yourself and I will be using some of your room treatment ideas as my preference is to have treatment built in so that you don’t know that it’s there. I really like the colour choices and it seems a wonderful space to listen to music in. In London we did something similar using a dark blue. My HiFi is nowhere near your level though. In Portugal will will have a separate music room like you.
Hiding the treatment to the extent possible, and getting an aesthetically pleasing listening room, cum a small study was the main idea. I still haven't treated first reflection points so far. And also plan to add diffusion on the front wall. But iam taking it really slow at the moment, as I want the future additions to blend into the room while still being effective sonically. Will look forward to your dedicated room build to get ideas that I can implement. All the best sir