Alesis SR-16 - Studio-Grade Standalone Classic Drum Machine ... The Alesis SR-16 is a highly popular, studio-grade 24-bit stereo drum machine (originally 16-bit) widely used for its 233 realistic, natural drum sounds, including dry and reverbed samples. It features 12 velocity-sensitive pads with Dynamic Articulation, 50 preset patterns from professional drummers, and MIDI connectivity for versatile, reliable, and authentic percussion
