Front end is a Grimm Mu1 server/streamer feeding a Chord Dave through a Bibacord AES/EBU digital cable.  The Dave goes to the Elekit integrated 300B amp through Cardas Clear Beyond RCAs.  Emotionally involving.  It's addictive.

There's an English Electric switch handling the ethernet, connected with a Muon Pro ethernet filter to the Grimm.

Relocated the GR-Research open baffle servo sub 4' behind my listening position.  It totally disappears there with no room modes!  Sounds like all the bass is coming from the soundstage.

Both the speakers and the amp are kits I built with a lot of help from my brother-in-law, a retired circuit board designer.

Room is irregular, including gable windows behind me, which certainly helps.

Speaker cables are all silver Gryphon Guideline cables from the '90's.