GRAPH TECH PRL8721-B0 : RATIO LOCKING TUNED MACHINE HEADS – ELECTRIC 6 IN LINE CONTEMPORARY MINI BLACK 2 PIN
The PRL-8721-B0 is a set of Ratio Locking Tuned Machine Heads for an electric guitar that uses six in line tuners. It has a contemporary mini shaped button, has a two pin casing and is finished in black.
*Now includes InvisoMatch Standard Mounting Plates for easy installation. Fits most headstocks.
Ratio – Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. We 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.
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I have no words for Mr. Soto. My most organized, relaxing, enjoyable purchase to date. It does not resemble in any way, the “professionals” of the music field. As for the tuning keys, a drop-in replacement without modification on an IBANEZ S521 (which comes from the factory with 2-pin type tuning keys).