As far as improvements, the resolution and natural sound across the headphones I’ve tried is apparent. The Violectric did already has awesome spatial, soundstage, and imaging capabilities, so the Soekris continued to enhanced that. Compared to the Modius, the treble is smoother and less fatiguing and I get a consistent level of bass all my sources from what I experienced (this is with a Diana which can be too revealing in source material).
It is also really nice with my tube and amp as I can play both XLR/RCA at the same time, and volume control is nice to have to fine tune things.