Seymour Duncan SPB-4

I put it in my Squier Affinity PJ Bass and the guitar started sounding like a piano... No kidding. It's a strong, rich sound, full of harmonics.
Very punchy, clear and well - defined, doesn't push the amp into overdrive easily (which is a good thing in this case). Sounds simply amazing.
I guess if you want to sound like Steve Harris, this is a step in the right direction.

Very clear, defined sound exactly as other SD pickups I've tried. Tonally I feel it's low mid focused, not overly bright. It makes the sound more thick and ballsy compared to regular P pickup.