How many power supplies do I need to operate my SuperSting™?

Short Answer: 1 for normal mode & 2 for boost mode.

Long Answer: The AGI SuperSting™ AC/DC Power Supplies emulate one battery each. For normal power, one power supply is adequate. For Boost (2x) power you will need two power supplies. The AC/DC supplies are quoted in pairs. More details on Boost Mode which is operated with power supplies or batteries is here.