Up for sale, a 1970's Maestro PS-1A Phase Shifter in excellent condition and in perfect working order, complete with a modern Ronsound three-button footswitch. Designed by Tom Oberheim (yes, that Oberheim), the Maestro is an extremely lush-sounding all-analog effect. Engineered to approximate the swirl and dimension of a Leslie, the three rocker switches offer variable speeds and ramp up or down when a new setting is engaged, simulating the mechanical nature of a Leslie rotary speaker.
Originally designed for use on a mic stand with a threaded attachment on the bottom of the enclosure (for use with keys), this Maestro comes with a modern three-button switch controlling the activation and speed of the effect in a more convenient, guitar-friendly way. While not true bypass, the PS-1A colors the tone in a pleasing way desirable to many players, rolling off treble brilliance and adding a sweet midrange-centric character.
This pedal is very clean cosmetically, sporting the less commonly colored green/white/orange trio of rocker switches. The silkscreen graphics are in great shape, the large paper label is intact on the back, and there are only a few minor scuffs and marks on the enclosure.