What does this do?This product is used to produce drum and percussion sounds. You can make 909 type of kick drums. The toggle switch on the left chooses between long and short VCA decay. The toggle switch on the left chooses long and short pitch envelope decay. Smack knob control lefts you mix in a noise 'paper' sound for the drum. -There is onboard distortion to get techno type of kick drums. -This internal oscillator is triangular core, with internal reset. -The internal trigger conditioner can take audio rate frequencies. -There is a manual push button. Why are there two trigger inputs?You can mix in two trigger sources to create complex percussion patterns. The internal circuit is using logic 'OR' triggering. This product was refined for optimum sound and response from the controls. Part values were changed from the original 909 design. This is not a clone. 30 mA +12V 24 mA -12V 10 HP 32 mm deep
