This unit doesn't come with a power supply, offering a more flexible option for your setup.

To use this BSS London BLU - BOB2 Eight - Channel Output Expander, first connect it to your existing system as per the system's requirements. Since it doesn't have a power supply, make sure to use a suitable external power source. When connecting, double - check the connections to avoid any signal issues. As for maintenance, keep it in a clean and dry place. Regularly check the connection ports for any signs of dirt or damage. If you notice any problems, consult a professional technician for assistance.