4, 5, 6-string · Bolt-on
Le Fay's Karlsson - 'Le Fay's Formula 1': a light, easy-playing six-string (also 4/5) with narrow string spacing so extended-range basses no longer feel heavy or unwieldy. 34" (86.4 cm) padouk neck, solid ash body, two passive single-coil pickups and an RHT right-hand-tuning bridge (tuners at the bridge). Made in Germany.
| Construction | Bolt-on |
| Strings | 4, 5, 6 |
| Body | Solid ash |
| Neck | 5-stripe padouk with carbon reinforcement |
| Fingerboard | Rosewood (CITES-conform) |
| Neck Pickup | Passive Le Fay single-coil |
| Bridge Pickup | Passive Le Fay single-coil |
| Controls | Passive |
| Bridge | Le Fay RHT (right-hand tuning / bridge tuners) |
| Made In | Germany |