This is my first post on SBAF (outside of the intro post). Please correct me if I have posted in the wrong place, or stepped on the forums best practices. It's also a bit long. I feel that was necessary to get the feeling of my issue. I just started on my headphone journey a few months ago and auditioned sundara, ath-r70x, quad era-1, lcd-x, arya and he6se. Briefly: ath-r70x: just didn't compete on this list. Apparently I like planar. quad era-1: fun, but the way the bass and warmth took over the sound just got old quickly. lcd-x: better than quad, but the lcd house sound struggled in the same way as quad without EQ (didn't try to EQ it) sundara: brilliant. The only thing I really wanted was more bass slam. This headphone is wonderful to my ears. arya: better than sundara in many ways, but not in any way that justified the price jump to me. and now the problem child: he6se (adorama special edition) To me, it merged the benefits of the arya and the sundara with little to no compromise. I would call it a "meatier" version of them. Not so light and dainty as the arya but maintaining most of the best aspects that matter to me. This is on an smsl sp200/m200 stack which I felt was the *bare minimum* to make it go. (idsd micro signature didn't cut it, which I was hoping. that was naive.) So, now I am considering building a stack that is varying degrees of dedicated to it and I would love some feedback on these options (or any other suggestions) topping d90/a90: This would still be usable for other things. It's not clear to me that it will take advantage of the he6se (some reports put this next to v281 and speaker amps for he6se) flux labs fcn-10: Highest power head amp available for an almost acceptable price. Like a90, should be good for everything. Cons? brand new, unknown everything. Kind of high risk here. I do like that it's one box. yamaha a-s801: 100W stereo integrated amplifier. Costs less than the above, has speaker uses as secondary option. It is very well regarded in its price point (as far as I can tell). But, probably not great for any other headphone. And it's freaking huge. Space is a *bit* of a problem on my desk. various schiit: There are a half dozens options here. I'm a bit overwhelmed. make other suggestions: lower budget with minimal compromise is better. I am torn as I was trying to do a "general" solution originally that would let me rotate headphones in and out. The he6se kind of ruined that. What would you do? and, more importantly, *why* do you lean that direction? Thanks so much! Been lurking here for months. I really like the straight forward advice.