Has an input & output jack of a guitar 6.35
Does not output to a nine volt external power supply, so standard 9v battery power.
It's more simple than that there is a knob. The edition of the sound is very easy, simply turn the knob to adjust the phaser.
The effect is vintage trs trs & beautiful. It raproche the sound produced by a Leslie. For my part I use for this, for the sound of a Leslie cabien. It sounds good with a Les Paul or Start.Pour have the true sound of the phaser I use the MXR phase 90 from home
I use it for 3 years. This effect is subtle trs between the phasor & leslie.
It is obvious that I could do without.
Rod Barthet http://www.rodbarthet.com