I have the Sennheiser HD600, Neumann NDH-30, Audeze LCD-X.
I use these with my SSL2 hp out, and with Qudelix 5K.
I spoke to someone about my impressions and his first question was: which dac/amp? and when I told, he just winked.
So my question is: is the difference this obvious with a more expensive dac/amp combo? Should I spend another 6-800 euro to get one? Do your headphones open up/perform that much better?
It’s really dependent. Amps have more diminishing returns than headphones so jumping from a $50 to a $500 amp is going to be much less of an improvement than a headphone equivalent. On the other hand, with a good enough amp, there can be significant improvement.
Good enough being already in the 100-200 USD range