I made this super Jazz bass about 19 years ago. It started life as a fretless bass, the owner played in a jazz quartet and a swing band.
The body is made from American red Alder, the neck is laminated three piece Maple with an ebony fingerboard, 24 frets. The pickups are Bartolini quadraphonic jazz, with an on-board Bartolini preamp, master volume, pan, cut and boost bass and treble. Although the pickups of passive, they are very low output and have to be used with an on-board preamp. The Bartolini preamp has a built-in gain control to boost the output of the pickups, that's also used to match the output of the bass to the amplifier.
I would have to say the combination of these pickups and preamp make this bass one of the best sounding fretless basses I've come across. The pickups are very unusual in that each pickup consists of four mini pickups, so each string has its own pickup. This gives a very focused and defined sound to each note.
The owner bought it back to me to have it converted from fretless to fretted about nine years ago, it's now come back to have the frets removed to convert it back to a fretless bass, once again its going be used in a jazz quartet.
Nitrocellulose lovers read no more, as I sprayed this bass with polyester, it still looks as good now as the day it left my workshop some 19 years ago. Not everybody's cup of tea having a guitar that looks brand-new when is 19 years old.
And yes Jazz is spelt with two S's customers choice.