Pros: Natural sound, which fits perfect for HD800; solid and simply design; two inputs.
Cons: A bit too expensive; I wish it will be slightly more powerful (will have more reserve volume).
I was looking for a new amp for HD800 - I wanted something more than my Lyr could provide.
I experienced M1, Canor Audio TP 10, Luxman P-200 (I also heard SPL Auditor and Phonitor last year and had Schiit Lyr). What I can say? M1 sounds a lot like Lyr, but faster, with a little bit thiner midrange, cleaner heights, slightly wider sounstage and a bit better transparency. Good device for it's price!
But I love TP 10 very much. It sounds perfect with HD800 and in comparison with M1 it has even slightly wider sounstage and airier sound at all because of more articulate heights. Vocals sounded magically - natural, powerful and emotional. It also has a great transparency for tube (hybrid) amp! Very detailed bass, but not as deep as M1 can provide. HD800+TP10 combo sounded full-blooded, warm and clear. It has a great synergy in my opinion! Just upper midrange sometimes sounded a little bit too bright.
P-200 is the best of the best (in comparison with MF M1HPA and Canor Audio TP10) - it has all the advantages of both amps but almost does not have any of their disadvantages. Maybe it's lower bass is not as persuasive as M1's. But it's upper midrange is more comfortable than TP10's although it was raised a little (like in TP10's case) - good feature for HD800 (because they have a bit distant midrange). And, of course, the soundstage. It is the strongest quality of this amp! The voice was not in my head (like it was with Lyr, M1, TP10), it is in front of me - so, it sounds very real. Detail is also the best I've ever heard, especially the bass - I can hear every nuance there! And it is easy to hear the produced echo of all the instruments and vocals (I can not hear it so clear with other amps). All in all it sounds natural - although it has its own colouring, but this colouring fits perfect for HD800!
As a result I bought P-200 (I successfully sold Lyr the same day). I don't know if it shows all the potential of 800s, but I think more than 80%. Now I understand all the claims of people who reviewed HD800 with Luxman P-1. I belive it sounds better, but even it's younger brother performed amazing and showed me a lot I have never heard in headphones before.
P.S. I think Luxman is far better than any of six amps I have heard. Maybe it is not the best choice for HD800, but one of the best for sure.