I have a Planet Waves Pedal tuner. It is true bypass so it it working by a switch. Does this mean that the battery is only being used while the pedal is on or all of the time? Sometimes I leave a cable plugged in and wasn't sure if this drains the battery on this pedal. I know it does on BOSS pedals.
Yea, I think it will drain the battery if you leave the cable in, it happens on all pedals.
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Fender Strat/Tokai LS80>few pedals>Orange Rocker 30