Here it is, finally, the American Loopers Aux Switch that can control pretty much anything on the Boss DD500, RV500, MD500. With our switch, you can assign any of the two switches in any combination to do:

Bank Up
Bank Down
Fade In 
Fade Out
Loop On/Off
Loop Clear
Effect SW
Roll 1/8 1/4 1/2 
Momentary
Twist
Warp
Hold (freeze)
Tap
 
It doesn't get any more creative than that!    

This switch will also work with Boss MS3 as well.

* You will need a TRS Cable, please see the cables category.

* Boss DD500 Not included