@mapman So this gonna sound stupid but I have a sub and Roon! not one of the premium sub like Rel but Elac 1010, I was using it with the Rotel amp before I got the BAT preamp which have 2 pre out xlr/rca. I use the xlr for the amp but never thought to try the other rca out for the sub. I tried it at the moment and glad I did!
Still early and it's not "realism" yet but with crossover at 80 Hz I hear more impact from instruments even on Jazz album like Dexter Gordon One Flight Up, Clarity somehow on a few songs from Led Zeppelin, The Doors, Cream than what I'm used to. I don't know why I neglected the sub but I was afraid to insert it in a tube preamp with no sub preout. I'll do more listening in the next few days but sub is a new improvement.
Regarding Roon, I used the Parameter EQ (I don't see a specific DSP toggle in the Muse menu, unless DSP is EQ) few weeks ago to smooth out treble and bass response but didn't notice much difference and the room response was not that bad just a small spike in mid bass when I measured it using a measurement app so I turned it off after a week, that was with the Totem the Sonus Faber in this room definitely needs EQ. Thanks for the help!

