I've found a set at a good price, but I'm trying to figure out what the sound is like. People say "vintage sounding", but I must admit I have no clue what that means. How would they sound on a Fender P-bass (Mexican, 1991)? I love the low tone with the standard pickups, but am looking to boost the mid/high range too without losing clarity. Can anyone offer a description of how these guys sound, say in comparison to Seymour Duncan Quarter Pounders?