HI, my name is Tom. Came here through Tortuga Audio's website.
My main system consists of 
-  Raspberry Pi4 as a streamer
-  Gustard X26Pro DAC
-  Pass Labs XA60.5 Monoblocks
-  DIY 4Pi speakers with upgrades
Plus I have an Adcom system from the late '80s.
My immediate interest is researching passive attenuation versus digital attenuation in the DAC.