into my early 80s Jazz. I had active Barts in them previously, for use as a slapping bass. Now, I use my 5 string basses for gigging and I decided to mess around with the old 4 string Jazz. As my other basses are geared for an agressive modern tone, I was going for an old school blues / rock tone with this bass. After considering a number of pick up options, I decided on the SD Hot Jazz model; these are single-coils and are not the stacked hum cancelling type. This bass is going to be played finger-style for blues and classic rock. I even put a set of GHS stainless steel flat wounds on the bass. The pick ups have a notciable higher output, but nothing that would overdrive your preamp. The tone has a lot of big bottom and nice mids. The highs are there if you want them, but with this bass, I'm going for the deep darker old school tone. I'm very happy with the pick ups and the flatwound strings.