This is a circuit bent NavyStar Musical Noah's Ark. As far as the bends go, it has had two knobs and two switches added to it. The first bend (left-hand knob) is a straight speed/pitch bend. The switch closest to it turns the bend on or off. The second bend (right-hand knob) is a speed bend but also sends the device into glitch mode. This also can be defeated or engaged with the adjacent switch. The device also has another switch that allows you to send the audio output to either the internal speaker or a 1/8 inch (3.5mm) mono jack located on the front of the unit. Hours and hours of circuit bent fun!