@ghosthouse
Yes, the Yggy was only released as MB.
Questions about money are always dependent on the value you place on things, and your economic situation. So I will not address absolute "worth".
Relative "worth" is easier. I think it would be as big or greater an improvement as going from singled-end to balanced cables (although this ignores the quality of each type of cable). It is said that the SE summing circuit on the Yggy is "super transparent" (see #2 on http://tweakaudio.com/EVS-2/Schiit_mod.html), and if it is the same on the Gungnir, this might be part of your preference for balanced ICs.
Yes, the Yggy was only released as MB.
Questions about money are always dependent on the value you place on things, and your economic situation. So I will not address absolute "worth".
Relative "worth" is easier. I think it would be as big or greater an improvement as going from singled-end to balanced cables (although this ignores the quality of each type of cable). It is said that the SE summing circuit on the Yggy is "super transparent" (see #2 on http://tweakaudio.com/EVS-2/Schiit_mod.html), and if it is the same on the Gungnir, this might be part of your preference for balanced ICs.