Ugh, I wasted my time watching the Z-Review of the Utopia...
Does anyone else use the QES Labs Reference headphone amp with the Utopia? Zeos says that’s what he uses but it has an output impedance of 164 Ohms (QES Labs recommends a minimum of 200 Ohm impedance load), according to the specs. I reckon that would significantly affect the FR and performance of the Utopia and not give a good representation of the sound as designed. Not that I'm trying to debate his opinion or blindly defend the Utopia, but this seems like a massive mismatch.
To me, he really just tries to drive home his personal preference without ever really trying to understand what he has in his hands, or what gear he uses regularly, which is a disservice to his viewers... plus, I find him as obnoxious as can be.