Well as much as I try to like the modern Duncan JB I just never do. No matter what guitar or wood I try it in. I find it to be too trebly and it just never seems to have that mojo that you heard in those classic 80's hair metal tones like Demartini's. So I figured I would try out the real thing from back in the day. Picked this up on the Bay. It's an old JBJ. The extra J stands for Maricela Juarez. She is the head of the Duncan Custom shop presently. So being that it was wound by the Duncan's best back in the day the old JBJ's are said to have more warmth and tonefullness. Hopefully that is true. This pickup is super clean being that it is probably around 20 or so years old. Tests at 16.8K. I also have a 59' from the same era coming. They will be going in my Agile AL Albino.