DAC and AMP question

I have a topping dx7s and drop THX AAA 789 and was wondering if it is worth upgrading any of the listed components?

I use them for my Kiwi ears aether, and HD 800s. I use them daily for music like metal, jazz, classical, movies and for gaming as well.

Someone on marketplace is selling a dx7 pro for $350, would upgrading to that be worth it or would you recommend something else?