This is a caddy for two small electronic musical instruments to work together. Don't use this with the Korg Monotron or Ipod Touch or the world might explode! Korgiepod is a little caddy to hold two well known portable electronic musical devices. Then you need a 1/8 inch to 1/8 inch male cable to connect the output of the top one to the input of bottom one. You can then use the built in filters to filter the audio in strange and low fi ways. You can even hear this through the built in speaker! The caddy has a large hole in the back suitable for building and inserting a 1/4 inch jack to 1/8 inch male cable for maximum sound system connectivity! Happy jamming! http://www.robohobos.com