Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents precision engineering and refined performance, setting a benchmark for enclosed tuners. Designed with a precise 1:18 gear ratio, it delivers velvety-smooth and highly accurate tuning stability. Each component is CNC-machined to exact tolerances and permanently lubricated with specialized grease for completely maintenance-free operation.
Equipped with high-grade brass string posts engineered directly into the housing, the M6 90 minimizes wear and prevents backlash. The innovative stepped flanged washer centers the string post securely over the banjo bolt, eliminating tilt and removing mechanical pressure from both the post and mounting screws without requiring stepped headstock drilling.
Featuring standard retrofittable dimensions identical to its predecessor, this tuner allows straightforward replacement without headstock modifications. Premium materials and surface treatments ensure dependable tuning integrity across diverse playing styles and demands.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Single Tuner Weight with Button (Small/Large) | Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjo bolt |
| Button Bore Hole | Diameter 0.17 in with 0.14 in driving surface |
| String Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
