High quality product, 18 V powered.
It comes with 4 knobs to allow a perfect set up of the desired sound.
As a result, the set up might be little tricky in oder not to spoil the sound with too much flanging.
In addition, like all mod pedals, the sound comes a little darker, with a cut at high frequencies.
I would recommend using it in combination with an EQ to compensate.
To end, by pressing a dedicated button, you get the EVH flanged sound
Releasing the button will bring you back to your set up