Hey All ! Looking to get some guidance on amps for the HD800s, which I plan on purchasing next month. The DAC I'm using is a Twisted Pear Audio Buffalo 3 SE (9038Pro). I recently finished building it with the Cronus reclocker and have no plans on replacing it. Previously I've had an Ayre Codex, Bryston BDA-2, PS Audio Nuwave DSD and so many other less expensive DAC's. This one is here to stay. Besides the DAC, I have an HD650 with CK2III, and HD700 with an RJM Sapphire v4 (this one seems less familiar here). The HD800s will replace the HD700. I will initially use them with the RJM Sapphire, which I hear from some places is a good pairing. I built the Sapphire without intention of sale and parts alone cost me over $500. (TKD pot, Mundorf input caps, Kimber RCA's, Furutech IEC, Parmetal case, etc), so I'm reluctant to replace it, unless something can offer a noticeable improvement. I am intrigued by a Tubes option, and am willing to go DIY. Ones on my radar that could be worthwhile: Bottlehead Crackatwoa or Mainline Decware CSP3 Elekit TU-8600 Budget is around $1500 Attached photos of my Sapphire and Buffalo builds, for those less familiar.