Using the Behringer ULTRAZONE ZMX2600 is easy. First, connect your stereo or mono sources to the two ultra - low noise line inputs. You can adjust the level controls on these inputs to get the right volume. Then, use the level controls on the six stereo zone output channels to set the volume for each zone. If you want a mono output in a zone, just flip the stereo/mono switch. The 5 - segment LED meters on each zone will show you the signal activity. When it comes to power, plug it into a power source within the 100 - 240 V~ range as it has a flexible 'Planet Earth' switching power supply. For maintenance, keep it in a clean and dry place. Wipe it with a soft, dry cloth regularly. Avoid exposing it to extreme temperatures or humidity. And make sure to turn it off when not in use to save energy and prolong its lifespan.