Some of the finest acoustic drum sounds ever designed! Designed to be played with the hugely powerful XV synthesizers, the SRX-01 kicks of Roland's SRX Series of expansion boards with a bang. . . and a thump and a crack and a crash. The sounds are unbelievable. There's 64MB worth, covering everything from jazz to rock to pop in all their variety. The vast polyphony and extensive synthesis capabilities of the XV make these drums are the most dynamic you've ever heard, and they can be layered and played in stereo with all the nuance of real drums.