1. No. Not at all. Given the level of your associated components the Master Coupler is entry level. Full disclosure, I reject the notion of there being any such thing as overkill. You could put a $10k SR cord in there and be blown away. So even that would not be overkill. It would be a misallocation of resources, which is not at all the same.
2. No its a sieve. Bucket without a bottom. Red herring. McGuffin.
3. Yes and it should be. You want everything on one circuit as a general rule to prevent ground loop hum and keep noise levels down.
2. No its a sieve. Bucket without a bottom. Red herring. McGuffin.
3. Yes and it should be. You want everything on one circuit as a general rule to prevent ground loop hum and keep noise levels down.