1 IN, 1 OUT jack 6.35
9V battery operation or mains (on mini jack)
In terms of publishing, simpler, there's not:
1 switch to the mode of "color" effect. One way sounds more acute than the other,
A rotary knob to adjust the frequency of phasing (speed)
The effect is awesome! I adore. I am a collector of this brand Phaser pedal. They all sound so different. I use them with synthesizers (digital and analog): happiness! I find the model Mk1 "cleaner" and less "fat" as her little sisters.
Several years ago I use this model and I would change it! Each version is unique. We like it or not, in any case, beside it, the digital phasers is the m. ...! When you taste the vintage phasers ... you do not change anymore!
Unfortunately, this pedal is scarce.
Warning, if you buy one, ask for a picture of the inside of the beast because over time (30 + years still to early!) Solders become "dry" (especially if the owner of a Such wonders did not take care).