In response to my own findings, EVO dac in conjunction with Barefoot Sound MM27, extensive apparatus decoupling, treated room (flutter echo, bass nodes and specific reduction of 40Hz node) and a digital cable laying bare possibly too much, i wanted to find a solution or something that took some edge/ harshness off the sound.
Changing digital cable proves a softer/ smoother sound is ofocurse possible, but you also miss addictive microdetail (a sense of 3D).
So, one idea is to go for AMG PRA, another route is to try the DIY OP-amp change in EVO dac.
As suggested by Nuprime i inserted the 3 MUSE OP-amps.
So far the dac has been playing about 24-30 hours with the new OP amps and even though i use my AQ Raven cable, i find that the leading edges are softer,( a slight roundness if you prefer) and even so, not a same in your face when i do increase the level/ volume.
I would say, if you have a very detailed sound but it's tending to cause some fatigue, this is an update very worth doing.