Maestro PS-1A Phase Shifter

^# 37

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$190.00 Price Tier: Standard

4.0 (4)

This product is Vintage or Discontinued

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13 wishlisted

24 saved

Page last updated Jul 05, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated July 5, 2026.

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Price

5.0 (7)

$190.00 8 available Used

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Average Price: $190

Standard/Professional

$75

$201+

Price Tier

In the Phaser Effects Pedals category, Maestro PS-1A Phase Shifter is priced in the upper end of the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Description

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Introducing the Maestro PS-1A Phase Shifter, the unsung hero of vintage phaser effects pedals. This iconic pedal, first produced in 1976, provides musicians with a simplistic yet versatile phasing experience. It is equipped with three set speeds, giving users the power to create a wide range of sonic textures. This pedal is a must-have for those who appreciate a good ol' classic.

Key Features:

Category: Musical Instruments > Guitar Pedals & Effects > Phaser Effects Pedals
Simple phase shifter with three set speeds
Notable for its vintage charm and versatility
First produced in 1976
Ideal for creating a wide range of phasing effects

Product specs

Brand	Maestro
Model	Phase Shifter PS-1A
Finish	Black
Year	1970s
Made In	United States
Categories	Phaser Pedals

FAQs

What type of power supply does the Maestro PS-1A Phase Shifter require?: The Maestro PS-1A Phase Shifter is designed to be powered by a standard 9V battery, as it was originally manufactured in the 1970s before modern power supply standards.
How does the Maestro PS-1A Phase Shifter sound compared to modern phaser pedals?: The Maestro PS-1A Phase Shifter is renowned for its warm, vintage analog tone, which is often described as lush and organic, differing from some modern digital phasers that may offer more precision but less warmth.
Is the Maestro PS-1A Phase Shifter suitable for live performances?: Yes, the Maestro PS-1A Phase Shifter is suitable for live performances, offering a rich, vintage phasing effect that can enhance guitar tones on stage, though its size and battery power requirement should be considered.
Can the Maestro PS-1A Phase Shifter be used with instruments other than guitar?: While primarily designed for guitar, the Maestro PS-1A Phase Shifter can also be used with other instruments like keyboards or bass, providing a unique phasing effect across various sound sources.
What are the control options available on the Maestro PS-1A Phase Shifter?: The Maestro PS-1A Phase Shifter features three control knobs for adjusting the depth, rate, and intensity of the phasing effect, allowing for a range of modulation from subtle to pronounced.

Videos

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Marco Tiraboschi

Maestro Oberheim Phase Shifter PS-1A DEMO

Marco Tiraboschi

VIntage Maestro Phase Shifter PS-1A Demo Gravity Music Gear Led Zeppelin

Brad

Maestro PS 1A Phase Shifter Demo (clean and distortion)

Guitar Pedal Demos

Maestro PS1A Phase Shifter

fxdoctormedia

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Maestro PS-1A Phase Shifter.

Features and functionality

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The smooth transition between speeds when switching off the fast mode while slow mode is on creates a unique braking effect, likened to a jet engine slowing down.
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Use cases and applications

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Favored by enthusiasts for its 'early Rush in a box' effect, appealing to fans of classic rock tones.
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It is noted that the phaser sound can sometimes feel separate from the instrument, as experienced with a Wurlitzer, yet still delivers a cool effect.
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Some users have creatively used the pedal to achieve organ-like sounds with instruments like pedal steel, highlighting its versatility beyond traditional guitar use.
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Value and pricing

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Purchased for $380 plus shipping, seen as a good deal as it included the original box and manual, with prices on Reverb typically higher.
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User experience

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The pedal's simplicity with three speed settings is appreciated for covering a range of needs without the complexity of additional knobs.
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Real owners appreciate its historical significance, linking it to famous tracks like Led Zeppelin's "No Quarter" and Big Star's "I Am the Cosmos."
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Comparisons

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The Maestro PS-1A is often mistaken for similar-sounding units like the Univibe, but its unique ramping speed feature distinguishes it, enhancing its appeal for Big Star fans.
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Mods and upgrades

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The rare PS-1B version includes a variable speed knob, offering additional control, unlike the more common PS-1A, which lacks this feature.
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Build quality

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The pedal's design includes a threaded bottom for microphone stand mounting, indicating its intended use as a table or stand unit rather than a floor pedal.
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