Hi! I got this crossfader fiew days ago. Packed in cardboard box, and ESD safe bag. Everything nice, but, when i , folowing instruction, connected it to my mixer, nothing happened. I searched in internet, but there was no information available what can be wrong, and than i started to investigate connections, i found that wiring does not correspond to connector onboard. I found that middle pin from 3 pins is right one, but other two from sides should be crossed. So i did that, and now its works. Its possible that for other hardware revisions of DDM4000 could be different. My one is from 2007.