the pedal at the end is called a VUMP. Voltage Unit Meter Pedal. It doesn't do anything to my signal, it just shows how much signal I am pushing on my output. I got it to help me balance my presets, and because I thought it was a really cool pedal.
This video is of an older model that has a dial to switch the meter from 0 to -10 or -20. Mine has a 3- way switch.
got it here.
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That's a great idea! I having (mis)using my empress comp at the end of the chain at home to adjust levels between presets because I didn't know this existed.
