Hi Alain,
P refers to Fender's Precision Bass, so it's the split pick-up design. As it's an Alembic product, I would assume that they will still sound far more neutral than any regular P replacement pickups.
But as it is a double pickup, and also the physical size of the magnet and the windings is different, to a degree it will sound different from the soapbars. IIRC, it is louder than the J-shaped pickup that they offer.