@georgehifi Wow . Thanks so much for this diagram. You even included names of each component. Thanks so much.Thanks, you may not even need the Sys if the gains of the Aegir and Vidar amps are the same. (unlikely if different manufacturers, but a possibility from the same Schiit)
But if you do you and it's on the Vidar you can also vary the Sys to use it for "those odd recordings" that may need a bit more bass or a little less bass, or visa versa if it on the Aegir, a liitle more or less treble.
So it will almost be like having a control to vary the tonality of the sound if needed, with certain recordings
Cheers George