Alesis knows drums. The legendary SR-16 ignited the drum-machine market in 1990 and has remained a classic ever since. The SR-18 is designed to meet the demands of today s musicians. Introducing the SR-18. Following in the tradition of its ancestor, the SR-18 is loaded with cutting-edge drum kits, electronic drums, hits, and up-to-date percussion sounds for any modern drummer. From hip-hop, to country and everything in-between, the SR-18 has you covered. The integrated effects engine includes Reverb, EQ and Compression for customizing the sounds to your liking. Since the SR-18 can be powered by AC or batteries, it ensures that whenever you need to lay down a groove, you're fully-equipped. Professional drum machine so you can record and play back your own beats 12 natural feeling, velocity-sensitive drum pads Large 32MB sound set, with percussion bank and bass synth sounds Dynamic Articulation stereo samples with reverb and ambience for realistic playing 100 Preset / 100 User drum kits with a large collection of sounds assignable to any pad 32 voice polyphony Built-in Effects “ Reverb, EQ and Compression Built-in rhythm patterns to complement your playing Large LCD display with easy-to-navigate interface Instrument input for connecting a guitar or bass MIDI output to play external MIDI devices MIDI input for using the SR18 as a drum expander module 2 Footswitch inputs for controlling Start/Stop and Count/A/B/Fill High-quality 24-bit stereo, aux L/R and headphone outputs AC or battery powered (batteries not included) Lightweight, durable enclosure Specifications: AC and Battery Power capability (6 AA s- not included with product) and AC Adapter 24 voice polyphony Backlit LCD MIDI In and Out TRS ¼ Aux Output Drum Roll function Headphone output Instrument Input 100 Preset Patterns and 100 User Patterns Tempo / Value dial Footswitch control- Start/Stop and Count/A-B fill