Maestro PS-1B Phase Shifter Guitars These early Model Ds are

These early Model Ds are amazing instruments and sound fabulous

whereas turning counter clockwise yields a darker

Awaiting a full service

remote reverb tank unit

as has the pin matrix

Maestro PS-1B Phase Shifter Guitars These early Model Ds areRare later version of the classic Maestro phaser. The PS 1B is the same as a PS 1A but the with addition of a knob to give variable phasing rate. The PS 1A is still one of our "go to" phasers and had plenty of the the standard PS 1A units through. Produced in the 70s and designed by Tom Oberheim (but although for a US brand they were actually made in Japan), they have a fabulous lush warm sound and three switchable settings. The variable speed control