4 String 4 In Line Bass Ratio Open Back Classic Clover Leaf Button - Chrome - Graph Tech Guitar Labs Ltd.
4 String 4-in-line Bass Ratio Open Back Classic Clover Leaf Button - Chrome - Graph Tech Guitar Labs Ltd.
4 String 4-in-line Bass Ratio Open Back Classic Clover Leaf Button - Chrome - Graph Tech Guitar Labs Ltd.
4 String 4-in-line Bass Ratio Open Back Classic Clover Leaf Button - Chrome - Graph Tech Guitar Labs Ltd.

4 String 4-In-Line Bass Ratio Open Back Classic Clover Leaf Button - Chrome (PRB-4401-C0)

PRB-4401-C0

SCIENCE BEHIND RATIO:

RATIO® patented gear technology
RATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.

From Low E to G - 48:1, 36:1, 25:1, and 23:1.

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. 

 

Bass Ratio animation

Description:

The PRB-4401 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use 4-in-line configuration.

 

In order to achieve the higher gear ratio's, Ratio's are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong.

 

Headstock Configuration 4-in-line  Ratio Tuned Machine Heads: The New Standard In Tuning Technology

 

Specification:

Gear ratio: unique for each string position - one turn-one tone
Peg holes diameter required: 0.720" (18mm)
String post diameter: 0.547" (13.9mm)
String post length to string hole: 0.807” (20.5mm)
Weight per single machine head: 3.5oz (99.3g)
Weight per set of four: 14oz (397g)
String diameter up to 130 gauge
Includes 4 machine heads, mounting screws and bushings

 

GUIDES:

Staggered Ratio Measurements.pdf Ratio Installation Guide.pdf Ratio Installation Guide Video

REVIEWS:

 

Our Bass Ratio rated 5 stars on Sweetwater.

Sweetwater Rating 5.0

 

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