Digitech Guitar Distortion Effects Pedal (DOD-LOOKINGGLASS-U) Use the looking glass for tone shaping, glassy boost and light overdrive, or go further down the rabbit hole into the raw, psychedelic sounds of a vintage amp pushed to the brink of failure Circuit design by Christopher venter of Shoe pedals Dual gain stages selectable via toggle switch Hybrid Pre- and post-gain bass and Treble controls Input filter control to tame overly-bright guitars