To use this Crestron DM - NAX - 4ZSP preamplifier, first, connect it to the correct power supply included. Then, you can connect your audio sources to start streaming. Make sure the power supply is stable to avoid any malfunctions. When not in use, turn it off to save energy. For maintenance, keep it in a dry and clean place. Wipe it gently with a soft cloth if it gets dirty. Don't use any harsh chemicals on it as this may damage the unit.