Probably, but I'm not spending $1500, I'm looking used maybe $650-$700. I already own the Concero. If I had a $1500 budget I'd probably just go for an Anedio D2. Even if I sold the Concero for $500 (which i'd rather not) that puts me at about $1100 which is X-Sabre territory, but I really can't stretch budget any further than that for awhile. I'm mostly hung up on keeping the Concero because I like the filter options and remote player control.
That's why I'm looking at a used Nuwave or Gungnir right now to pair with it. Yulong D18 could be another option but I'm afraid it might be too warm considering I already have a warmish amp. Better question I suppose (and to stay on topic) is which would better compliment the qualities of the HD800? It seems the Nuwave might have the edge on detail but the Gungnir on naturalness.
Also I remember reading somewhere that the Nuwave XLR outputs 5.6v so I'm assuming SE is 2.8v which again would help balance out the lower Concero gain (which is still in effect as a converter). I still find some high dynamic range tracks to be slightly too low output with HD800 and my amps 10db gain. I could mod the amp for higher gain but I'm hesitant to willingly increase noise level of amp.
Thanks for the input, regardless. Decisions, decisions...