To use this Black Lion Audio master clock, first, make sure you have a suitable power supply as it's not included. Connect it to your audio setup following the standard connection procedures. When using, keep it in a stable environment to avoid any interference. For maintenance, clean it gently with a soft cloth from time to time. Always handle it with care to ensure its long - term performance. Remember, since there's no power supply, you need to get one that matches the clock's requirements.