so Marcus will you still be upgrading your dynamic setup now that you have your stax?
it's turning out to be an all-in-one solution for me. it sounds technically superior in everything over my dynamics. even if the bass of the dt990 is better in quantity, the stax gives it a texture that makes it more realistic...
how are things going on at your end? 
nope not going to touch dynamic upgrades

I have other plans now that I cleared out my dynamic range of cans lol
The d1 is certainly a richer DAC than the udac and gives the stax a better footing overall. Cutting down on the chain is likely to be the main factor I think.
I am starting to think though I need an IEM also, not sure to go for a cheap one like the aiaiai swirl for the house sq i so like or something high end.
I will deliberate for a while on this I think.
Still need that a1 amp so have to let go of the dot MK2 soon.