So, as an experiment I connected the balanced out from Schiit Bifrost 2 into Lokius and that output into analog in on HA200. It works quite well and provides fine tuning beyond what is built into the HA200. I select this mode when I'm using either headphones that need a lot of adjustment, or really bad recordings, as many older classical recordings need EQ regardless of the headphone being used. When listening with the Solitaire P I use the built in DAC and tone controls on the HA200---I think it sounds better, but it's hard to quantify what is different. Ultimately, doing things this way allows a lot more flexibility and for sure to my ear the Lokius and the HA200 tone controls sound much better than any software EQ I have used. I have never quite understood why the HA200 costs $8900 USD, except that it seems to be built very well.