Holo Audio is not chipbased DAC, and AD1862 is circa 30 yrso design, from the time where "magic" lived in audio equipment so it`s hard to compare. No measurements from Mystique so it`s impossible to judge but this guy on youtube, Zeos or Zeus could not hear any difference between Holo May and...
Answer is quite simple IMO.
As dac itself uses ancient R2R chip it`s probably (in purpose) design to awake 1st and 2nd harmonic distortion to give it preferable coloration.
everything that people wrote above.
My air conditioner affects my equipment. There`s a buzz in AMT on my Adam A77x speakers the AC is running. NO buzz on headphones though.
Both are driven by A90.
So I guess that in high gain amp distortion from AC power would be hearable, and should be seen on if someone would measure tweeter...
If it would be any help.
Someone linked programmer offer from...
I`ve bought programmer suggested by Gustard. It`s basic the same thing but in different color from another manufacturer.
You this to stick into J3