Here's three different people using Kinman HX P90's

Steve Housen from the little river band with them in a Les Paul Gold Top.....from the date of the video these must be the original ones
https://www.youtube.com/watch?v=9IG2n0tRCYM

A guy called Mark Mitchell that plays some very tasty blues on a Strat fitted with two Kinman P90's ...again the first models of this pickup.
https://www.youtube.com/watch?v=hvP3soyUK9M
Same guy again here.
https://www.youtube.com/watch?v=3api4od0jAI

Here is a review of them by a UK guitar store owner....explains them the best.
https://www.youtube.com/watch?v=6Gq4EBQScjc

I've had guitars with P90's on them before, and have always loved the sound, but the HUM!!!! ..Argghh...ended up not using them because it.....these Kinmans have the tone, minus the HUM...