Using the DigitaLinx DL - DAC6 is easy. First, connect your digital audio source to either the optical or digital coaxial input. Then, plug in your speakers to the 3.5mm jack or stereo RCA jacks. Flip the switch to select the input you're using. For power, you can use the included power supply or connect it via USB. When using, keep it in a dry and cool place to avoid overheating. If there's a power surge, the built - in surge protection will kick in, but it's still a good idea to unplug it during a thunderstorm. To maintain it, simply wipe it with a dry cloth regularly. Avoid getting it wet as this could damage the internal components.