Using the Fender Acoustic Preverb pedal is easy. First, connect it to your acoustic guitar. You can then select from the three different reverb settings to get the sound you like. Use the tilt knob to adjust the EQ balance according to your preference. The notch filter and polarity switch can be used when you encounter feedback. Just turn on the notch filter and flip the polarity switch if needed. When on a dark stage, the LED - backlit knobs make it easy to see your settings. As for maintenance, keep it in a dry place. Avoid dropping it as the chassis, though made of durable aluminum, can still be damaged. Clean it gently with a soft cloth if it gets dirty.