I’ve got Sabrina X in 13x23x10 and I assume that this speaker is comparable to the Sophia. I added subwoofers just for the bottom octave and have the crossovers set very low. I found that the sound was very dependent upon room treatment, which is a work in progress. I suspect that this is a common finding in a small to medium size room. The subwoofers actually made things more difficult and much of my room modifications involved very heavy furniture, carpet with heavy pad, large couch and a number of bass traps. So, I’ve tamed the bass and everything is quite musical and not tiring. I hope to investigate the use of diffusers to improve the soundstage and fine tune the bass traps
On my short journey to my present system, I had a phono preamplifier that was fatiguing and negatively impacted the upper registers of vocals. Moving to the Audionet phono preamplifier fixed this issue.