Go to Content
Special financing available No Credit Needed Financing.

Mu-Tron Phasor III Vintage Silver Optical Analog Phase Guitar Effects Pedal

Phasor III Vintage Silver Optical Analog Phase Guitar Effects Pedal


(3 reviews)


Print page
You need Flash player 8+ and JavaScript enabled to view this video.
  • Images (3)
Discounted Price $279.00
Order Now! This item is out of stock but will be available soon. You will not be charged until your item ships.

Protect Your Investment! ( More Info )

Discounted Price $279.00
Add to Cart
So many artists and recordings have used the Phasor II over the years.  Unfortunately they are hard to come by, most likely need servicing and are clunky.  
The Phasor III not only replicates the creamy tones of the Phasor II, but it also packs a bunch of features of its own.  Such as: 4 and 6 stage phasing,  expression pedal control and a modular optical design all in a compact 9 volt DC package.

Modernized version of the classic Mu-Tron Phasor II
The Mu-Tron Phasor III is the son of the classic Mu-Tron Phasor II. While Mu-Tron designed it to contain all of the great tone of the Phasor II, they also wanted to make sure it would stand up to features found in other modern Phaser pedals. The big difference is that most modern phasers are NOT optical and are op-amp or digital based.  This means that they are generally noisy and need blend and/or tone knobs to preserve your tone.  The Phasor III is just right.

Pedalboard-Friendly Design Made in the USA
Unlike the vintage Phasor II, the Phasor III does not need to be plugged into the wall, nor does it take up half of your pedalboard. The Phasor III employs the same circuit as the Phasor II but is powered by our patented "Medical-Grade" power rail internally and not a clunky transformer. It only draws 120 mA and will work with any 9V DC center negative power adapter. Mu-Tron even designed a 9V portable battery pack called the PS-2 Battery Buddy that will power many 9V pedals and your 5V mobile devices as well.

Modernized features make it even better
In addition to re-creating the creamy phase of the Phasor II,  the Phasor III also offers a 4 stage mode with a fixed feedback to get the classic rock tones that work well with overdrive and distortion harmonics. Finally, there is a control voltage input that will allow for real-time control of Rate or Depth to give the musician utmost expression and “Leslie Speaker” type of sounds.  The pedal also supports control voltage out so that 2 or more Phasor III pedals can be linked to offer BiPhase and TriPhase types of applications. keyboards and horns.

  • Feedback controls the level of phase feedback in 6 stage mode
  • Rate controls speed of phase in 4 and 6 stage modes
  • Depth controls intensity of phase effect
  • Shape selects square or sine wave
  • CV maybe assigned to rate, depth or none
  • Stage (4/6) determines 4 or 6 stages of phasing

Get your Mu-Tron Phasor III today at the guaranteed lowest price from Sam Ash with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Guitar Effect Pedal
  • Sticker
  • Instruction Manual

A must own!!


I have been playing guitar for over 20 years and this is hands down the most beautifully sounding phasor I have ever used. With it's rich analog sound it adds so much depth to your music. A must own for anyone looking to add that psychedelic edge to their sound.



Phasor III


Was looking for a phaser with a small footprint, top jacks and more than one great sound on tap, and found it with the Phasor III. You are able to toggle between 4 and 6 stage phasing with one of the foot switches. Brilliant. The sounds are top notch as well. First I set up a nice, subtle phasing sound in the 4 stage "mode", which is very usable for both clean and dirt, single notes and chords. The 4 stage sound is in the ballpark of a script phase 90, but I wouldn't say its identical. But it is as "usable" as a script phase 90. Then, when I want it to go to "11", I click on the "stage" switch. And the "feedback" knob is disabled in 4 stage mode. So you can really tailor the difference in sound between 4 and 6 phase mode, without really compromising the sound of either. The pedal is definitely more expensive than your average phaser, but this is not your average phaser - either in design, execution, or sound quality.



Great phaser!


Was looking for this product for a few months. Then found it on Sam Ash.


Palo Alto


Phasor III Vintage Silver Optical Analog Phase Guitar Effects Pedal

5.0 3


Effect Type Multi-FX
Inputs 1 x 1/4"
Outputs 1 x 1/4"
True Bypass No
Casing Type/Chassis Aluminum
Battery Power No
Power Supply Type 9V DC Center Negative
Power Supply Included No
Weight 1 lbs.
Dimensions 2.5x1.5x4.625 inches (WxHxD)
Series Micro-Mu
Model Phasor III Vintage Silver
Warranty Info:

Mu-Tron products carry a limited 1-year warranty. If you believe you received a defective product, please do not hesitate to contact us at [email protected] and we will respond quickly with assistance.