I just finished trying to put these into an aerodyne just last week. I had a set of original emg jazz in a MIM fender jazz, but hated them. I guess I would use the usual term and say they sounded sterile, but I loved the attack, and the silent operation. So when the released the X series it sounded like they had fixed all that I felt was wrong with them. So I start installing, and soon realized that I will definitely have to route to get the 9 volt in. I love the bass to much to start digging on it, so Im here with a set of 200$ non returnable pickups. I will say they shortened the pots from the old style, which is nice, because my old jazz knobs used to stick out bout half and inch to far, and now the system is completely solderless. Big heads up, you have to reverse the very last wire going into the battery terminal. I trouble shot this for a day and a half. If you get them in let me know what route you used to get the battery in.