Maestro PS-1A Phase Shifter vs Whirlwind Rochester Orange Box
The Maestro PS-1A Phase Shifter and the Whirlwind Rochester Orange Box are both pedals sharing bright, low gain. The Maestro PS-1A Phase Shifter leans crunchy. The Whirlwind Rochester Orange Box leans transparent.
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Blended from circuit-archetype lineage, dynamic feel, tone-signal overlap and tone-vector distance — the tone vector itself is derived from editorial description text, not a measured acoustic signal, so this reflects how similarly the catalog copy describes the two, not a lab measurement. Shown only within a gear class, and only where there's enough evidence to be meaningful.49% — somewhat different
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Genres both listings are associated with.- Classic Rock
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Derived from overlapping tonal signals across both listings.- bright
- low gain
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$209via Reverb
The Maestro PS-1A Phase Shifter is a vintage analog phaser introduced in 1971, prized for one of the lushest, warmest phase sounds ever produced. Rather than a sharp modern sweep, it delivers a warm, organic, and often subtle swirl with three speed settings, including a distinctive braking transition between fast and slow that sounds like a jet engine winding down. It defined classic 1970s phasing, heard on the electric piano of Led Zeppelin's No Quarter and on recordings by Steve Howe and Ernie Isley. It suits psychedelic, classic rock, and vintage tone enthusiasts who want immersive, lush movement. Some high-end loss occurs when engaged, easily corrected with a buffer upstream.
The Whirlwind Rochester Orange Box is a handwired phaser pedal designed by Michael Laiacona, cofounder of MXR, reviving the character of a classic 1970s script-logo phaser with modern 9V AC adapter power and true bypass. It produces a rich, organic, chewy phase swirl that reviewers describe as softer and warmer than the MXR Phase 90 it is often compared to, with a crystal clear, transparent, and musical top end. Higher-grade, tighter-tolerance parts keep it substantially quieter and less hissy than many vintage-style phasers. It suits blues, funk, and classic rock players wanting a vintage single-knob phaser with true bypass and essentially no tone suck.
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Genres this gear is documented as being used in.- Rock
- Ambient
- Funk
- crunchy
- transparent
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Occasions this gear suits — judged per model, or derived from its wattage, connectivity and category.- Busking
- Live
- Practice
- Studio