Rather than buy a dedicated expression pedal for each of the factors, you can make a box that splits the signal 3 ways. On mine there is an on/off stomp switch for each output, with corresponding Red, Green, & Blue LED's to show where the signal is going. Boxed it up yesterday, and it works! At first I was worried that all 3 outs on at once would degrade the strength of the signal - but it tracks just the same with all 3 as with only one. I'm using an Ernie Ball 6181 (Jr 25K). Anyhow, just wanted to let everyone know that this is a relatively easy way to control these 3 pedals.