Roland TD-10 Drum Brain Module with EXPANDED TDW-1 Expansion Card Revolutionary electronic percussion sound module based on Roland's proprietary COSM technology Extremely easy to use via six faders, large value dial, icon-based programming and backlit graphic LCD Lightning-fast trigger response; amazingly accurate detection of stick velocity, position and speed Positional sensing allows for triggering of sounds with natural timbral difference depending on location of drum hit 12 Dual-trigger inputs and 8 outputs (4 stereo pairs)