midi mixer

I just purchased the MIDI Mix DJ Akai.

I wanted to know how much power consumption it takes.
I wasn't able to find my answer anywhere.

Please help me.
I want to use it on my keyboard.
Regards Norman.

I am looking for a hardware midi mixer with which I can quickly change the midi channel my keyboard transmits from and also the midi channel my software (Garritan Personal Orchestra and Cubase SX) recieves on.It should also have a few effect contols such as modulation wheel which my keyboard does not have and reverb depth etc.