Graph Tech Ratio (18:1 to 36:1) Bass Tuners Taper Shaft 4 Inline Black
Graph Tech Ratio (18:1 to 36:1) Bass Tuners Taper Shaft 4 Inline Black
Manufacturers Part number: GT-PRB-4400-B0
The PRB-4400 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 4 Inline configuration.
RATIO® patented gear technology
RATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.
From Low E to G - 36:1, 30:1, 20:1, 18:1.
We balanced the gear ratios to each string simplifying the tuning process.
With RATIO®, a half-turn is a semi-tone!
Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.
In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong.
- Gear ratio: unique for each string position - one turn-one tone
- Peg holes diameter required: 35/64" (14mm)
- String post diameter: 0.547" (13.9mm)
- String post length to string hole: 1.030” (26.1mm)
- Weight per single machine head: 1.86oz (53g)
- Weight per set of four: 7.44oz (212g)
- String diameter up to 0.98 gauge (or larger if taper-wound)
- Includes 4 machine heads, mounting screws, and bushings