Roland TD-20 V-Drum Percussion Sound Module With over 500 new sounds, improved dynamics and sensitivity, plus CompactFlash storage and V-LINK All-new V-Editing includes modeled snare buzz, kick beater selection, and greater cymbal customizing (i.e. size, sizzle, mic positions) 15 dual-trigger inputs, 10 audio outputs and digital output, 8 group faders and built-in sequencer, Mastering Room and more Expansion slot for future upgrades and enhancements