solderdude
Grand Contributor
Utopia are VERY sensitive to output impedance. Just 10 ohms will already change the bass. Much higher and it will start to sound bloated.Utopia, ... I don't know if this is marketing or something, maybe they just don't pair well with tube amps?
So... if that tube amp had a high output resistance (some do) then yes... the Utopia is a bad match.
And yes... for some people a certain tonality/tuning/EQ can make them prefer just about any headphone.
The fact that you can't make a silk purse from a sow's ear is evident. You need to have at least some good properties amongst them comfort and fit.