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

From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1.

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.

The PRN-4624 is a right-handed set of open RATIO® Calibrated Machine Heads in a retro look for electric guitars that use 6-in-line tuners.

Fits vintage style guitars (e.g. Fender Style).

Please note that our retro tuners are made to a vintage specification (for 11/32” peghead holes) and will not be a direct replacement for a modern tuner. Please check the specifications below.

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ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • 6-In-Line Retro Fender Style Ratio Machine Heads (PRN-4624-N0, Nickel Finish) - Nickel / Classic
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Carparelli - Guitars-Parts & Accessories

Ottawa, Canada
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