As @Jolter noticed, I'm unwilling to share information that can reveal the company the friend of my friend worked at. I'm also, not aware of much of the technic

As @Jolter noticed, I'm unwilling to share information that can reveal the company the friend of my friend worked at. I'm also, not aware of much of the technical aspects of what they did, as my friend was a scientist and the other guy had done much of the hard work, so he did not know most of the details. Hopefully, in another visit there I can see him and find a way to meet the engineer, maybe I can encourage him to share his designs, tuning method, and other insights he has.