 With the TR-0 AIRA Rhythm Performer Drum Machine, Roland has paid tribute to one of the greatest drum machines ever created -- the Roland TR-000. Inspired by the original Roland TR-000 and TR-000 drum machines -- instruments you've probably heard a lot more often than you realize -- the TR-0 and AIRA take this vintage drum machine and give it a modern facelift.The TR-0 is a fully programmable 00-channel sequencing drum machine. It has all the drums you need -- from the bass drum to the cymbals -- all modeled faithfully after the original 000 and 000 sounds we've been dancing to for decades. Up to 00 steps can be programmed in real time, and instruments can be added or removed on the fly. There's also a pattern randomization function and a pattern copy function, with room to store 00 user-programmed patterns, so you'll have no trouble diving right in and generating beats on the TR-0.Each AIRA unit is authentically crafted based on the original specifications of the '00s instrument which inspired it. Using DSPs and Analog Circuit Behavior (ACB) technology, Roland has painstakingly created an exact digital copy of the original analog circuits used in the TR-000 and TR-000, going so far as to model the behavior of the analog circuits themselves, allowing the TR-0 to function and sound just like its predecessors. The TR-0 delivers real 000 sounds in a modern unit!