Other than Leo Fender himself, no bass builder is more commonly associated with the Fender Jazz-style bass than Roger Sadowsky. The New York-based luthier first made his mark in the late ’70s as the go-to repair guy for the city’s session elite. Not long after, he began to build his own line of Fender-style basses, most equipped with his famed boost-only 2-band onboard preamp. Sadowsky has since become an iconic brand, often credited with sparking the souped-up J-style bass boom that has dominated the marketplace for at least a decade now. This long-term association with Fender-style basses is what makes Sadowsky’s latest model so intriguing: The Single Cut is an entirely new design, the result of a collaboration a few years ago between Roger Sadowsky and Shop Manager Lisa Hahn. Our tester is even more special than a stock Single Cut, though, as it boasts a chambered spruce body core, here capped with a “master grade” maple burl top and back. I can’t pinpoint the date, but