Exactly,
the Eqi=Tech wall cabinet (sub panel) is meant exclusively for dedicated room/only audio equipment need. I will use five of the available six 20 Amps separate circuits in 5WQ for my own use.
I'll leave the sixth one available for family's future needs after I will eventually be no more, and after one day, perhaps some of them might grow into appreciating taste of sound in music and not a noise, as an alternative to selling it all at a steep lose.
I already prepared five Romex 10-2 runs, twisted with my own hands and into a flex metal conduit/shield. Four of equal lengths in a cluster of (3) on the front wall /adjacent corner on the long wall, and one 70' on the other end of the same, long wall.
Equi=Tech engineer told me that I did not need all of this twisting and shielding, but what a heck, it is already done and is hanging in the joists! It was; however, a back twisting job, and I was on it for two months with a bright sun shining outside last summer.
Again, I appreciate all of your responses @sns. Yours is a big help for a newbie to stay the course, and I am glad that somehow crediting own intuition I ended up with a different instinct. However, there is not one audiophile without a bad turn, or a U-turn on this seductive journey.