This Allen & Heath GLD-112 Compact Digital Mixing Surface comes with firmware version 1.62 (rev68207). It includes the correct power supply. There are some minor fader motorization issues, but the faders still read accurately.

To use this Allen & Heath GLD - 112 mixing surface, first, connect it to the correct power supply. After powering on, you can start adjusting the faders to control the audio levels. Although there are some light fader motorization issues, it won't affect the fader readings, so you can still rely on the fader values. When it comes to maintenance, keep the surface clean and avoid exposing it to extreme temperatures or humidity. If you notice any other problems, contact the customer support team.