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?
I’ve never personally noticed an issue with DACs, once you get to ~$20+ the DAC is usually not the issue. I’ve noticed noise and buzzing from interference on cheap amps though, so I second that part. I would get a nice quality amp before investing in a good DAC, they’re much more important.