Great review, I enjoy my Burson V5s tremendously. I was really tempted to buy the H10, but I already have lots of headphone amps. I'm a little surprised to hear that they do better than D200, but I guess Gustard made a very competitive product. 

Thanks!
Well the H10 has more power than the D200.
Also, separate components usually do better due to dedicated psu and less interferences.
Still, the d200 is a great unit and very good q/p ratio IMO.
Cheers

great review! now i need to get my hands on the V5s lol. btw, how would you compare the D200 vs the X12? i have the same stack except using the D200 as my stack, do you think its worth swapping out the D200 with the X12?