OK, I'm asking for your opinions based on your tastes. Please, be absolutely free to share your experience with integrated amp+DACs no matter the rigs you use.
I'm not pointing specific headphones because I'm using several very different headphones with different amps (at this time O2mk2, K701, K141 Monitor, SRM-727II, Corda Prehead 1, TPA6120-based amp, sometimes my friend's tube amps, .... ).
I'm trying to get different opinions.