Fender level set buffer pedal.
This pedal is designed so that you can make a single adjustment on this one pedal when you switch guitars example (from strat to les paul) or switch amps ( vox to marshall) or any combination of guitars and amps.
The result is you no longer have to micro adjust all your pedals on your board. This one pedal first in the chain handles the gain differences.
I no longer use multiple guitars.
Would trade for a good low gain overdrive or fuzz pedal(not big muff)