When à product gives as possible the real sound as the recording : than we speak about high-end. ! Does it means The price of the equipment :: no ! P.ex.: The Ear Yoshino 509, VAC, Zanden… gave à pure sound ! That’s high-end for me .
High-fi / Mid-fi : steps to archieve à higher level of qualtty.. But to each his own pleasure and fun. An amplifier very good coloered with à “clock” in the front and very expensive (heard him several times). Is mid-fi for me : why? You don’t approach the authenticiteit and puriteinse of the music…. But it will be different for everyone. Enjoyed what “you” like !