Upgrade Your Gaming Setup with the Akko PC75B Plus Air! 

you only mention at the beginning of the vid the switches, but in the box it appears to be another switch, not yellow. That could explain the sound in the sound test.

Great review! I'm a bit troubled with the knob as well, where did you get the black knob?

Hi! just would like to know if where did you get the software for customization? Thanks