DS-1 Keeley Ultra Mod Distortion

does anyone use this pedal its look so interesting

how was that sound of DS-1 Keeley MOD

and how different between the stock DS-1 'coz so expensive

I like to get one but I'm not sure its gonna be useful for me or not

does anyone who had experience with this pedal ?

thank you

Type "Keeley mod" into youtube and you'll find a video that shows you exactly what you want to know.