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?
When I jumped from motherboard sound card to FIIO K5 Pro on HD58x sound quality improved like 20%. But when I jumped from FIIO to topping A90&D90 on HD800s it got only slightly better.
If I could make decision second time I wouldn’t upgrade AMPDAC.