Different filters, wha, sub-harmonic, a kind of phaser.
If we use the output 1, works like a normal pedal: it was switched on his treatise, not switched on the sound normal.
With 2 outputs (1 for the original sound, the processed sound 2) is better rendered by mixing the two, having changed the sound without losing the body of the sound (especially with the filter type phasers), by using the sub -harmonic sounds like some sort of octave. And then the two outputs is useful in the studio.

UTILIZATION

You turn the knobs, we try different positions, there is the sound.
I do not read manuals, it is the ear decides.

SOUND QUALITY

I use this pedal for a lower organ (-> I do the bass lines on the keyboard).
It is not for that, it's scheduled for a bass guitar, but hey, if you simply do what is "expected", thereby making the recorder
With a preamp tube behind ("Gas Cokker" Ridge Farm), it makes a sound like a sort of analog synth, all things considered. In this spirit, it can be used with high-pitched sounds of keyboard, fiddle sounds.

OVERALL OPINION

I use it for several months. I model Ibanez is zero, but expensive gadget months, unusable, very disappointing. I have not tried the Boss model has an input expression: too bad there are none on this pedal, but if you use a hand on a keyboard, the other can turn the knobs Commes direct controls.
Very good value for money.
I Refer this choice, a lot of fun.

very greedy, cell KO 2 h. Provide a power supply.