Whether you're an acoustic drummer looking to trick out your kit with electronic percussion or a songwriter in need of a more realistic way to write drum parts, the Alesis SamplePad 4 is the compact percussion instrument you've been looking for. Onboard, you'll find four highly playable percussion zones you can use to trigger 25 amazing onboard sounds, plus hundreds more when you add an SD card and load up your favorite samples. Onboard tuning and reverb let you get more from your sounds, and a pair of additional triggers lets you expand your setup into a mini electronic kit.