OK. I am going to go off your current draw numbers because I am in a time crunch. I exhausted my Famous Grouse Scotch and need to do a run...lol. For those current requirements that you posted and for future capability for expansion in case you use more power hungry gear use a 20A CB if available with the proper wire according to your local building code. If me installing/paying the electrician would go larger by a gauge or two lower in the wiring size to ensure maximum power delivery to the components so they get maximum voltage and do not have reduced voltage due to voltage drops across the wires. To maintain the maximum capable voltage at the load(amps) is to ensure maximum power output from the amps. I gotta run out for a ~hour now. Be back later...Musical fidelity nu Vista m3,
And as I said current it randomly tripping 10 and 16a cb.... So not sure if use same cb ie 16a but only with different curve - so it can sustain higher inrush current.
DAC and network streamer are few wats.