Come on. Citation needed. Does an analogue output stage somehow transcend all that is known about digital to analogue conversion? Does it need some fat tubes shoved in there to bring it to life, perhaps?
My simple, sterile, solid state full of feedback, human hearing transcending output stage sounds plenty alive. Maybe it's me who is dead inside?
U can easy fuck up the Output Stage/Buffer and it sound like a cat when u step on their tail
Slew Rate is such a funny parameter...
Ok, the AKM 93/97 ar not sooo critical, cause of voltage driven output... but with the current driven ESS Chips its not sooo easy. Look at the first SU8 - the v diff on output oamps was to low, measurements are still ok, but sounds like.... (put some funny word here). The V2 puts more v diff on the Chips - and tattaaa sounds like a gem
There many funny things in the time domain (not only spatial related) or music theory (major makes u happy, minor sad....)... there books of this topics out there. All related beyond the 'active' human hearing, we feel them more ... u hear what u brain think to hear
And no, that has nothing to do with tubes, orion rays, crappy vinyl sound. There things between the technically stuff and esoteric.
Both extreme sides are wrong