Also I have not seen impedance curve metrics for those Goldenears, but, from what I read and having heard them, I would be willing to bet that they might be a challenge for many amps, cettainly many tube, even some SS, to drive well. It would be worthwhile to find out more about the impedance curve if measured anywhere somehow if available. That would be telling!
Regarding, tube versus SS pre-amp, I love my ARC tube pre-amp, but again there is certainly no rule that says tubes always outperform or even just always sound better than SS. You've tried some things and compared so just trust your ears. Maybe you have not quite found the right tube pre-amp yet. Or maybe what you have is just fine, tubes or not. Trust your ears, not the hype and spin.
Regarding, tube versus SS pre-amp, I love my ARC tube pre-amp, but again there is certainly no rule that says tubes always outperform or even just always sound better than SS. You've tried some things and compared so just trust your ears. Maybe you have not quite found the right tube pre-amp yet. Or maybe what you have is just fine, tubes or not. Trust your ears, not the hype and spin.