The Carl Martin Pro Power offers a number of features designed with the touring musician in mind. Start with the switchable (110-230 V) AC input and split that into 8 individual isolated and regulated 9v (150mA) - 12v (110mA) outputs with extended power at output 7-8 9v (350mA) 12v (220mA) and you have a unique power supply you can use virtually anywhere.