This Kemper Profiler PowerRack Rack - mount Profiling Amp Head comes with firmware version 10.2.2.49572. It includes the correct power supply. However, there's a known issue: the gain knob and the bottom four knobs are missing their covers.

Using this Kemper Profiler PowerRack is easy. First, make sure you connect it to the correct power supply included. Once it's powered on, you can start using it as per your audio needs. Keep in mind that the gain knob and the bottom four knobs don't have covers, so be careful when handling them to avoid any damage. For maintenance, keep it in a clean and dry place. Regularly check the power supply connection to ensure stable performance. If you notice any other issues, it's best to consult a professional.