my amps i call precision instruments, even though many improvements may not be perceptive by the human ear as they are by test instruments and that doesnt mean
you shouldnt aim for even more precision and cleaner operation, to give you
an analogy, a ferrary has the potential for speed but is rarely used
at that potential,yes conventional design is all about negative feedback and the linearity and stability and many other benefits a circuit gets
from it, moreover negative feedback alone doesnt make precision instruments like my amps, to give you an example
linear loads, 0 phase shifts,0 thd,ps ripple rejection, circuit topology,ground loops,
advanced small signal techniques,symmetry,device charactiristics,circuit charactiristics,load stability,hf stability,thermal protection,etc
these issues and plus many others i use in my precision instruments are
rarely used in consumer electronics even by companies claiming
hifi operation instead they use money making philosophies like
conventional design,low power,gold connectors,oxygen free cables,pleasing casing,and the amps come with 10% thd at maximum output and subjective listening, to the ear all this adds up to another perception of what a hifi amp should be but actually isnt