Where do I start... This pickup is great.
I used it to upgrade my HB Dynamic. I was looking for something with plenty of power that can also clean up nicely. I decided to go with the SD Nazgul as it claims to have "agressive tones for drop tuning". I don't use drop tunings, I stick to standard, but that statement made me think it would be pretty good with clarity and after watching a few demos my mind was made up.
The pickup came with a wiring diagram for a HH single cut style guitar, not much use to me with my HSH strat, but Seymour Duncan have all the wiring diagrams you will ever need on their site. From there on the installation was pretty simple.
Before I even plugged the guitar in after its surgery, I could already tell that this was gonna be a very tight sounding pickup. When I had things wired up but not yet reassembled inside the body, I tapped on the pickups with a screwdriver and listened to the sound output to make sure everything is good. I could already hear how much mids this thing packs. Not overwhelming but pretty noticable.
With my instrument finally assembled, I strummed my first chord throught this pickup and I was amazed. Its tight, its got power, its got clarity. There's also this pleasent fuzzy tone in the mids that makes distortion sounds so rich. Yet it cleans up very nicely, having some beautiful clean tones is well. This thing just sings. And don't even get me started on the pinch harmonics. They scream like they are about to get mugged.... And this thing is passive! Amazing!
If you are looking for modern tones, this pickup will please you.