Tuesoa Electric Guitar Effect Pedal Low Gain Overdrive, Built-inFever Circuit, Metal Overdrive Effect Pedal

Preview Button: it controls the coloration (tone) of the signal before the pedal The last step in the setup is to decide how much detail you want in the tone: darker or brighter. Gain Button: When used as a clean booster, it is recommended to adjust the gain to match the volume to keep the tone as original as possible. his is a low-gain drive pedal,it bring you a very nice tone; also can be used as a booster, it easily creates the tone you want for the song you're trying to play. Output Button: This is the overall final volume. Set it so that there is little difference in volume from the original sound when the effect is turned on and off, or a little louder if