Professional-grade amp selector pedal for guitarists and musicians The Morley ABC Pro routes one input to three amplifier outputs with custom in-house 1:1 isolation transformers to eliminate ground loops and interference. Features silent relay switches for seamless amp switching, reverse polarity and ground lift controls for audio optimization, and a rugged cold-rolled steel enclosure. Designed and made in the USA for reliable performance on stage or in the studio. Professional Amp Selector: Route 1 Input to 3 Amplifier Outputs with seamless switching Routes 1 Input to 3 Outputs Custom In-House Made Morley 1:1 Isolation Transformer Reverse Polarity & Ground Lift Switches Easy accessible rugged cold-rolled steel enclosure; 6.63″ x 4.38″ x 2.75″ (L x W x H) Silent Relay Switches for noise-free amp switching during performance Made in the USA Professional Amp Selector: Route 1 Input to 3 Amplifier Outputs with seamless switching Routes 1 Input to 3 Outputs Custom In-House Made Morley 1:1 Isolation Transformer Reverse Polarity & Ground Lift Switches Easy accessible rugged cold-rolled steel enclosure; 6.63″ x 4.38″ x 2.75″ (L x W x H) Silent Relay Switches for noise-free amp switching during performance Made in the USA