Is this combo a good upgrade for my anandas and maybe a future he1k v2 upgrade over my kadas tone and atom stack?

Hi long time lurker here with a question involving powering my ATH-A900 cans. My current living situation has changed due to a nasty motorcycle accident and I am having to put my dolby atmos speakers away while i recover which could take a year or so. I am currently using my gaming pc to output...