The SR18 has a sound bank with a capacity of 32 MB . It includes a total of 500 drum and percussion sounds and 50 bass registers . To adjust them, the musician can use the built-in effects unit with reverbs , compressors and equalizer . Advanced Dynamic Articulation technology contributes to achieving real sound, especially with acoustic sound registers . Depending on the way the game is played, it changes not only the dynamics , but also the color of the sound . 100 factory rhythm patterns are available in the device's memory. An additional 100 memory locations can be used for user programs. The automatic drummer is equipped with an instrument input, MIDI interface (IN, OUT) and connectors for connecting control pedals . Audio can be routed to the main, headphone and auxiliary (AUX) outputs.