MXR M239 ISO Mini Power Supply Powered Subwoofers Polarity switch reverses the pedal's

Polarity switch reverses the pedal's up and down signals for universal compatibility

but can be disabled

IDEAL FOR: INDOOR MARCHING & OUTDOOR MARCHING

It's made to the same high standards of the other GIO series guitars

FBV 3 isn’t your average foot controller

MXR M239 ISO Mini Power Supply Powered Subwoofers Polarity switch reverses the pedal'sWhether you need a space saving solution for your downsized travel board or you just need to power a small, carefully curated selection of tried and true staples, this little box has what you needall while taking up less space than a candy bar. This pedal can be powered by the included ECB009 18 volt adapter. The Long Story The Mini Iso Brick Power Supply supplies quiet, noise free DC power to wide range of pedal types while taking up less space than