NFS: Kay Swingmaster S7 Double Bass 1937 Maestro Model


Hello! Thank you for viewing one of our double bass listings!  This instrument is no longer for sale because we’re keeping it for our permanent collection, 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 Swingmaster S-7 Double Bass 1937 Maestro Model Serial #1350


Kay Swingmaster S-7 Double Bass 1937 Maestro Model Serial #1350

Time warp edition of this early Kay Swingmaster upright bass viol.  Played quite a bit, but shown exceptional care and love.

This Kay is something special. Plays like butter, bridge straight and true.  Original Kay Swing Master bass details abound.

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