I think tubes for exactly reason you state…. microphonics are not a matter of IF but in band or out and how much ?
For the DIY crowd i suggest Panzerholtz ….. although even my Bricasti Solid State renderer benefits from a Panzerholtz shelf on HRS Nimbus. The Bricasti products come w excellent feet baseline.
Thereis a great source for Panzerholtz on USAM

