Power up to 8 effects pedals out of the box with the Truetone 1 SPOT Power Supply Combo Pack. The bundle is based off the 1 SPOT 9V Power Supply which takes up a single outlet space, even on a standard power strip, and outputs 9 VDC power at up to 1700mA. In addition, the 1 SPOT automatically converts voltage worldwide, so it can be used anywhere without the need for a transformer.