The Mission Engineering 529 Power Supply allows the simultaneous power supply of up to five 9V effect pedals for guitar and bass. Unlike third-party power supplies, the 529 is the first multi-power supply on the market to be powered via a USB port. Whether via computer, smartphone charger or USB battery pack, Mission Engineering 529 can be operated anytime, anywhere. Last but not least, a further 529 can be operated via the USB Out connection, which provides for up to 10 effect pedals with two units.