Product Overview
Ratio - Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. GraphTech balanced the individual gear ratios to each string dramatically simplified the tuning process. No more overshooting the G string or twisting away on the high E string.
With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string.
The PRN-4424 are the right-handed sets of open RATIO® Calibrated Machine Heads in retro look for electric guitars that use 3+3 side tuners.
Fit vintage style guitars.
Please note that 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 specifications below.
