This is a great analogue optical phaser from the legendary Musitronics Corporation - a Mu-Tron (Mutron) Phasor II...

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This is a great analogue optical phaser from the legendary Musitronics Corporation – a Mu-Tron (Mutron) Phasor II – effectively this is half the circuit of a Bi-Phase and the sound and build quality is exceptional.


The pedal’s in perfect working order and excellent condition, but it inevitably has a few minor bumps, dings and scratches to the case (see detailed photos).

Built to withstand everything seventies musicians could throw at it – with a solid aluminium and steel case and chunky rubber control knobs this vintage Made In USA pedal weighs in at over 1.5kg.

The sound is everything you could wish for in a top quality phaser – from thick and syrupy to shimmery and delicate – it flatters and enhances whatever you feed through it. Sounds lovely on guitars and synths, glorious on electric pianos and string synths: great playing live and quiet enough to be a serious studio tool.

It has been serviced and calibrated and is in perfect working order. The internal power transformer has been changed so it runs natively on 240v mains (no step down transformer required), but otherwise it’s in good original condition. It’s increasingly rare to find one that’s not been heavily-gigged (they can withstand an enormous amount of abuse) and this one looks and feels ready to take the next 30-35 years in its stride.


We usually have several rare Mutron units for sale: Phasor, Flanger, Bi-Phase & Opti-Pot control pedal, Digital Delay – see all our current stock here 


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