The led is super bright though

Only minor complaint is that the led is ridiculously bright when engaged, you can't see what the knobs are set to if you want to tweak.

The blue led, like many blue leds, is VERY bright; I usually cover them up with a sticker so I can see the setting on the pedal

I tried this in front, in the middle, and at the end of an effects chain, as well as by itself, plugged into the effects loop of my Mesa Boogie Mark V amplifier.