Yeah, but it's not going to be accurate when you change presets. Say you are in Preset 1 to start your gig....you hit the external switch to turn on whatever block it controls, led lights up, your block is active, you're all good! Now, you switch to preset 2 or scene 2,3,4,5 or whatever you have programmed....well your switch still shows that the block is on according to the LED, but is it really?? Sure, if you want to turn it off every time before you change a preset or scene then yeah, it will work....but what happens when you forget to do that??? The only way to have anything reliable that resets on preset/scene changes is something Midi based where the AX8 is sending info to it.