Wow.. I'm trying to keep up with all this, some truly knowledgeable individuals here.. thank you...... 🤯
a bit more info that might help pin point the problem but I'm not sure.
Had a practice last night at a local Venu.
I did have a tiny bit of the same hum when not touching the strings but to be honest if I wasnt listening out for it I would not have noticed.
AND this was at not maxed but pretty high volume, at home it would have been buzzing like crazy.
I live in a very old building so the wiring in here could be about as early as it gets 😬
I'm thinking my bass may not be perfectly shielded but I'm starting to think it may be a problem with the wiring of the house?
That or a bass hating poltergeist 👻