You are taking this way too seriously.
I have 3 dedicated lines all with 10 gauge going direct to the circuit panel. On the other end are Wattgate outlets.
Wiring direct will be a pain later down the road as your system changes , and it will look crappy and will not provide any sonic benifits.
Too many grounds and you will induce humm.
However, lifting the ground on your Digital might improve things.
I have 3 dedicated lines all with 10 gauge going direct to the circuit panel. On the other end are Wattgate outlets.
Wiring direct will be a pain later down the road as your system changes , and it will look crappy and will not provide any sonic benifits.
Too many grounds and you will induce humm.
However, lifting the ground on your Digital might improve things.