You mean Mjolnir but the V200 lost pretty easily. The Mjolnir is better for me but I see the Mjolnir as an amp for a specific purpose while the V200 is the more versatile one. It would be hard for the Mjolnir to be my only amp which it isn't but the V200 can be someone's only amp. What I mean is that the V200 can be used for sensitive customs (or iems in general), high sensitive headphones, more demanding headphones (short of the HE6 but does a respectable job but not as good as the Mjolnir). It also has a user adjustable gain which make it even more versatile. The Mjolnir requires your headphones to be terminated in some kind of balanced (4 pin or dual 3 pin XLR) and something that hopefully needs a good amount of power. With the HD800 and HE6 it sounds very good but it is connected to my HD800 permanently unless I upgrade which I don't see for now since I don't want to spend more money into this hobby for some time and focus on saving up.