These were bought to replace a stock set of Fender P-Bass pickups as they suddenly stopped working one day. First thing I noticed was the build quality, it was fantastic (unsurprising as it is a DiMarzio product). They were also incredible easy to install and connect to the electronics inside the guitar.
Once in they give a smooth tone, emphasizing the top and bottom ends with a slight mid cut, making them perfect for the more rocky based genres I play.