1974 Maestro Phase Shifter “PS-1A”

Here’s a vintage 1974 Maestro Phase Shifter “PS-1A” electric guitar effects pedal. This particular example, serial number 12894, is in very excellent all original condition. Making it’s debut in 1971, the Maestro Phase Shifter set the bar for many phasers yet to come, and still remains unparalleled by any other phaser that followed. Featuring three (3) simple switches for slow phase, medium phase, and fast phase, perhaps it’s simplicity is what makes it so unique and so great today.