Version 1.7. Comes with the correct power supply. There's a bit of glue residue on this unit.

Using this 32 - channel digital mixer is straightforward. First, connect it to the correct power supply that comes with it. You can then start plugging in your audio sources and adjusting the channels as you like. When it comes to the glue residue, it doesn't affect the functionality but you can use a mild cleaner to try and remove it if it bothers you. For maintenance, keep it in a dry and clean place. Don't expose it to extreme temperatures or humidity. Periodically check the connections to make sure everything is secure.