As every drum module from Tiptop Audio also the RS909 has a gate input which is normalized to the accent input, making possible to play the drum with full power without the need to patch a lot.. Of course the accent input's intensity can be controlled as well as the output level of the module.

The rimshot sound is generated by two oscillators which in the original TR-909 were tuned to fixed frequencies. This limitation was omitted by Tiptop Audio as they equipped the module with two frequency potentiometers for detuning the oscillators. The original settings of the 909 are marked with black dots.

The RS909 includes a high-powered output gain stage capable of producing hot signals. On the inputs, the manufacturers have designed a pulse-shaper circuit so you can trigger the RS909 with trigger/gate signals from step sequencers, clock dividers, or any other pulse/clock sources. This eliminates the need to shape pulses sent to the module and ensures the same stable sound at peak power, regardless of your pulse source. Based on the architecture of the 909, the Accent input is versatile and able to take in both CV and Gate signals for continuously changing dynamics. All of these unique features make integrating this legendary sound generator into your modular synth easy, unleashing the power of real analog drums.