I was just trying to answer to "Now I'm a bit curious: how is the sound from the built-in heamphone amp". This actually was asking for a subjective opinion. I really had no intention to dispute the measurements, far from it. I don't know why my experience is what it is (I cannot hear issues past 80%), if my ears ar not resolving enough or the issue may be fixed/absent because some possible objective reasons that I listed. I am perfectly aware that when one speaks about cables here on asr it smells like dynamite
Actyally I am totally convincend that in most of the cases cables are not an issue in 21st century, except when something makes you think they cannot carry enough power (and as an EE I fully trust Amrim's smell sense in his opinion about DC possible issue). By all means I advice anyone to use/buy a dac as he seems fit. I myself do notuse G6 altough from another reason (and because I feel Topping DX3 pro more satisfying but not soundwise). Have a great evening and stay safe guys!