--Discontinued--The ChainDrive makes it easy to feed multiple effects processors at once for creative parallel processing, or distribute any line level audio signal to a number of destinations in the studio. Buffered outputs prevent noise and interference, and individual level controls allow you to achieve optimal gain-staging no matter what range of devices you are connecting to. With the ChainDrive in your 500 series rack, you have access to simple noise-free audio distribution at your fingertips.