Pure vintage phasing—exactly as it was. The MXR '74 Vintage Phase 90 (CSP026) is a meticulous reissue of the original circuit that helped define the sound of countless recordings. Built with hand-matched FETs and a hand-wired circuit board, this pedal delivers the warm, organic sweep that made the MXR Phase 90 a staple on pedalboards for decades.

Simple, musical, and unmistakably analog—this is phasing in its most authentic form.

Key Features

• Faithful 1974 Reissue – True-to-original Phase 90 circuit and tone

• Hand-Matched FETs – Smooth, consistent phasing response

• Hand-Wired Circuit Board – Vintage-correct construction

• Single Knob Control – Dial in speed with classic simplicity

• Warm Analog Sweep – Rich, musical modulation without harshness

• Script Logo Styling – Vintage aesthetic and tone profile

Why the CSP026 Stands Out

The MXR '74 Vintage Phase 90 is all about authenticity—not just in sound, but in how it responds and feels.

Compared to modern versions, this pedal delivers:

• Smoother, more subtle phase sweep

• Less aggressive feedback for a more musical response

• Warm, organic modulation that sits perfectly in a mix

It’s the sound of classic rock, early Van Halen-style swirl, and timeless modulation—unchanged and uncompromised.

Dial In Classic Phase Tones

• Set slow speeds for subtle movement and depth

• Increase speed for classic swirling modulation

• Pair with overdrive for rich, vintage textures

• Use on clean tones for lush, dimensional soundscapes

This is the phaser you leave on—not because it’s flashy, but because it makes everything sound better.

Specifications

• Product Name: MXR '74 Vintage Phase 90

• Model: CSP026

• Type: Phaser Pedal

• Circuit Type: Analog (hand-wired)

• Components: Hand-matched FETs

• Controls: Speed

• Power Requirement: 9V battery only

• Format: Standard MXR enclosure

Power Requirements

• Powered by one 9V battery only

• Not compatible with external power supplies

Important Notes

• ⚠ Battery operation only—no DC input

• ⚠ Designed for vintage-correct performance and response

• ⚠ Lower output and subtler sweep compared to modern Phase 90 versions

Why Buy From British Audio

At British Audio, we appreciate gear that stays true to its roots. The MXR '74 Vintage Phase 90 is exactly that—a no-compromise recreation of one of the most iconic modulation effects ever made.

If you're chasing true vintage phaser tone, script Phase 90 sound, or the most authentic analog sweep available, the CSP026 delivers it exactly as intended.