I have a blackface fender and thought I would try using the RE-20 through the first channel of my amp and my dry signal through the second Channel. This works amazing. The coolest part is that the RE-20 is always getting my signal so I can build these crazy paddy sounds and then kick them on with the looper. signal chain is various pedals into launch pad launch pad 1 output => RE-20 input A => RE-20 output A => FlexLoop Return => FlexLoop => output => Normal Channel of amp Launch pad 2 output => Vibrato Channel of amp You just leave the RE-20 on all the time and use the FlexLoop to turn the signal off and on. This also takes the RE-20 out of your signal chain when it's not on. You can use the twist feature with the pedal and use the indicator light to tell when to kick the peal on and use those cool slipping sounds when the tempo is slowing down! If you don't want to hear it ramp up and get all fast this is a great way to do it. Your original tone is always there on the vibrato channel and it never goes through the RE-20. I also have the sensitivity on the launch pad up to where my amp was starting to distort and then I back it off to clean it up. You can turn off the direct signal on the RE-20 and this way you still have your direct sound and if the RE-20 starts to distort your original tone is clean. This creates another cool effect.