Update: All wiring has been updated to Cardas Clear XLRs and Speaker Cables and Cardas Clear Beyond Power Cords. System is sounding very good, improved detail and dynamics.
Appreciate all the experienced guidance!
(@ghdprentice - took your advice from another thread regarding using ethernet from Spectrum Wifi pod to the 390 and it has resulted in a quicker, more stable connection. Thanks for tip.)
Best,
Dokosan

