Using the BOSS FV - 30L is easy. Just connect your audio device to the INPUT 1 or 2 jacks using a 1/4 - inch phone cable, and then connect the OUTPUT jacks to your amplifier or other audio equipment. To adjust the volume, simply step on the pedal and use the smooth pivot action to make the changes. When travelling, its small size makes it very convenient to pack. Just make sure to handle it gently to avoid any damage. For maintenance, keep it clean by using a soft, dry cloth. Don't expose it to extreme temperatures or humidity, as this can affect its performance and durability. If you notice any issues, it's best to take it to a professional for repair.