I bought these pickups to replace the stock pickups on my MIM jazz bass. I was searching for a more round tone with more midrange. Neck position was most important - I wanted it to be more P bass like. Comparing to the stock single coil pickups, these have more bass and low mids, higher output and overdrive the amp sooner. Neck pickup sounds close to a P bass now. I wired the pickups with two 500k volume pots and 1 meg tone pot to retain the treble and it's a pretty good combo. More lows and mids and highs are still present.