Our Church recently transitioned from an analogue mixing board to a Allen & Heath QU32. This was our very first digital mixer, and we had no idea how to operate it. We just knew that based on our research, this was the board we wanted. David's "Allen and Heath Qu Series Video Tutorial" was all we needed to get up and running with tremendous results from the very first mix. We tried numerous YouTube videos, but we needed much more content and a systematic program. Our Church in Kingston, Jamaica thanks Dave for this marvelous product. I literally do not know how we would have managed thee transition without Dave's course. You are extremely special to us, Dave.