Wish I could help you out there. I also use the hd650s and valhalla 2 right now with the Yggdrasil. I have a DS gungnir too but it's just sitting in a box at my friend's house. I do plan on eventually getting a better amp when I have the money. Like drfindley said, the Yggdrasil is PROBABLY not worth it for the V2 over the Gungnir Multibit. That being said, I do have a speaker system so it just made more sense for me to the best dac possible for the money since it work for both of my systems. If you do get a Gungnir Multibit, you might get the "what if?" question if you don't ever get the chance to hear a Yggdrasil for yourself. If you can afford it and want the absolute word on resolution, imaging and soundstaging then go Yggdrasil. It'll have the best available dac technology as it becomes available to schiit.