This is a Zahnrad preamp/booster pedal. The loose low-end feel is very Fender-like, which I liked. I'm selling it because my personal tastes have changed (I now prefer a tighter low-end sound). It works perfectly and comes with the original box. A simple design black guitar effects pedal with an LED indicator. - Model: 3X2 - Color: Black - Connections: 1/4 inch jacks - Number of Knobs: 1 - LED Indicator: Yes Thank you for looking.