The Wicks Looper - Acid Mix is a small handmade device that allows you the create very fast noise loops, by adding layers of sound in real time. Before I go into the details here is a short YouTube video showing the Wicks Looper in action: http://www.youtube.com/watch?v=LnZTQbs69Ps (via Wicks Looper Acid Mix Synth loops by rarebeasts on Etsy)