You'll have to disconnect it or buy one of those micro usb cables that have a switch.1) How do I turn it off (I know some of you probably will say no need to, but I want to)
Depends on the amp, 3V if possible.2) What voltage do you guys use it at? 1v/2v/3v?
The white one.3) What filter do you guys use?
And I just use the stock power supply.