SOLD: Kay S9 Double Bass 1966 Kay Bass Viol


Hello! Thank you for viewing one of our SOLD double bass listings!  This instrument is no longer for sale, but check out what’s currently available in our list of Vintage and Used Double Basses. Upton Bass is also the proud builder of new custom upright basses at every price point. We want to help you find the perfect bass!  Contact us at or call the shop at +1 (860) 535-9399

Kay S-9 Double Bass 1966 Kay Bass Viol Serial No. 54004

Blonde Kay classic S9 Bass Viol in great shape. This classic plywood American upright bass has a refreshed setup with new Upton bridge, new endpin and Zyex strings (pics updated).



Kay S-9 Double Bass 1966 Kay Bass Viol Serial No. 54004

Vintage blonde Kay S9 Model in fantastic shape. Original neck and clean neck joint with new bridge (pictures have been updated to reflect freshened setup).

Good fingerboard with original bevel. Very well maintained example of this classic American vintage upright bass. Pretty outside veneers with straight grain and rippling on the back. New bridge, endpin and strings has it ringing like a bell – plays and sounds great. Blonde Kays don’t come much cleaner!

Looking for a new American-made plywood double bass with none of the vintage issues?  Consider the UB Standard Laminate Double Bass, built right here in Connecticut alongside our finest models. Features our big open sound, famous setup ergonomics and thick ebony board, all for less than a vintage instrument.

Upton Bass String Instrument Co. specializes in building award-winning custom double basses and offers accessories for the double bass. Upton Bass also services all instruments and bows of the violin family with world-class restoration and repair, to view our online restoration portfolio visit

Upton Bass is ready to offer advice and answer any questions regarding double basses or related bass topics. Please contact UB at or call the shop at +1 (860) 535-9399. Hours of operation Tuesday through Saturday 10 am – 6 pm. The Workshop (The Barn) and showroom are located in Mystic, Connecticut conveniently between Boston and NYC.