Ok guys. I bought some HD6XX and I was interested on Schiit stack or gear for aesthetic and price. My dilema is that I don’t know if to get a Vali 2 or Valhalla 2, since I’ll be be using the amp on a daily base for hours and hours and therefore I have to consider tubes lifespan. I really wanted the Valhalla 2, but if tubes are not gonna last me so much is a no go for me sadly. On the other hand I don’t know about the DAC either, if Modi 3 or Modi Multibit. I heard that the Multibit doesn’t like very much HiRes files and plays better with 44/16, also, that the bass / sub-bass is not tight and so well controlled. If this is true it’s Modi 3 for me also because a better USB implementation. At the same time with whatever gear I choose I’d be adding the Loki Mini. Thanks !