This is an HD/SD 8-channel analog audio embedder and disembedder. Please note that this unit doesn't come with a power supply.

To use this audio embedder, first, connect it to your appropriate device. Make sure to use external power as it doesn't have a built - in power supply. When handling, be gentle to avoid any damage. Keep it in a dry and clean place to maintain its performance. Periodically check the connections to ensure a stable audio signal. If you encounter any issues, consult a professional technician.