Using the BOSS DD - 3 Digital Delay Guitar Effects Pedal is a breeze. First, connect your guitar to the pedal and then connect the pedal to your amplifier. To adjust the delay time, you can use the 3 delay time modes or the Delay Time control knob to set it between 12.5ms and 800ms according to your needs. If you want to create some cool, long - lasting effects, just activate the hold function. When it comes to maintenance, keep the pedal in a dry and clean place. Avoid exposing it to extreme temperatures or humidity. And don't forget, it has a five - year manufacturer warranty, so if there are any problems, contact the manufacturer right away.