I will accept the thanks on behalf of Mr. System 
As far as competitors who make similar products, afaik its mostly just Moondrop and Tanchjim, and both have similar software issues, if the community consensus is anything to go by. For that reason, I’d hold off on buying any of these even though (afaik) they would work out of yr current Audirvana/DCS system.
I would try to find a way to work the Qudelix 5k into the setup, as its the only external EQ device I’ve found to have amazing software and continuous software support. Hope this helps!