4 String 4-In-Line Bass Ratio Open Back Classic Clover Leaf Button Lefty - Chrome (PRB-4401-LC0)
4 String 4-In-Line Bass Ratio Open Back Classic Clover Leaf Button Lefty - Chrome (PRB-4401-LC0)
PRB-4401-LC0
702725244508
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RATIOĀ® patented gear technology
RATIOĀ® - 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 RATIOĀ®, a half-turn is a semi-tone!
Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.Ā
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The PRB-4401-LCO is a left-handed set of RATIOĀ® Calibrated Machine Heads for BASS that use a 4-in-line configuration.
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In order to achieve higher gear ratios,Ā Ratio are the world'sĀ first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong.
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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: 0.807ā (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
Invisomatch Adapter Plates
Ā Ā InvisoMatchĀ® Adapter Plates offerĀ the easiest solution for installing RATIOĀ® Tuned Machine Heads on your guitar
No drilling, perfect alignment, fast installation!
The alignment of the machine heads is perfect, no holes to drill or fill, ideal for vintage instruments. Premium finishes are available for order, including chrome, nickel, black, and gold. Additionally, each set of RATIOĀ® Tuners comes with four complimentary brushed aluminum InvisoMatchĀ® Adapter Plates.*
*Each set of Graph Tech RATIOĀ® Machine Heads includes four sets of brushed aluminum InvisoMatchĀ® Adapter Plates. These plates are not included with bass or open back tuners. āFor a customized appearance,Ā Ā are available in finishes such as chrome, black, nickel, and gold.Ā
Find Your InvisoMatchĀ® Adapter PlatesĀ Fit (Download the Guide!)
Please note that our InvisoMatchĀ® Adapter Plates list is regularly updated. Before placing your order, ensure the selected plate matches your guitar's specific model and variation.
* Some guitars may have different configurations, so double-checking compatibility is essential.Ā
Simply select the installation plate design that matches the screw/pin hole location of your factory installed machine heads. Youāll be up and running within minutes, perfectly installed and aligned. Stay classy you axe master.
For stunning accuracy and response... upgrade to RATIOĀ® Machine HeadsĀ with it's patentedĀ Multi-Geared Tuning Technology. The new standard in tuning.
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Graph Tech has created some of the world's most recognized products and brands in the music industry
The list of industry firsts include the world's first self-lubricating nut in 1983, String Saver Saddles the first saddle to drastically reduce string breakage, TUSQ man-made ivory, and Ratio machine heads.
Graph Tech has over 50 patents and trademarks around the world.
- MLMichel L.Verified BuyerReviewing3+3 Ratio Electric Guitar Machine Heads (PRN-2311, 2341, please select finish and button style)I recommend this productRated 5 out of 5 stars1 week agoWorth it
made a huge difference on the bottom strings of my electric. I was use to see the tuning change by looking at the pegs :-)
- SNSteven N.Verified BuyerReviewing3+3 Ratio Acoustic Guitar Machine Heads Gold Finish. "45 Degree mounting screw" (GT-118-D0)I recommend this productRated 5 out of 5 stars1 week agoRatio tuners
smooth action , no lag. I put them on my Martins
- KWKristian W.Verified BuyerReviewing3+3 Ratio Electric Locking Machine Heads (PRL-8311, 8322, 8331, 8341, 8351)I recommend this productRated 5 out of 5 stars2 weeks agoGreat tuners
A bit expensive compared to competitors, but absolutely worth the extra money.
The only downside for me, was that the connection plates didn't match my original Kluson Waffle back.
- MCMarty C.Verified BuyerReviewing3+3 Ratio Electric Locking Machine Heads (PRL-8311, 8322, 8331, 8341, 8351)I recommend this productRated 5 out of 5 stars2 weeks agoLove These Tuners!
I have Graphtech tuners on my three guitars! They are the best of the best, in my opinion! These machine heads keep me in tune better than any tuners Iāve ever used! Worth every penny if playing in tune is a non-negotiable requisite for your playing satisfaction!
- JYJamie Y.Verified BuyerReviewing3+3 Ratio Acoustic Locking Guitar Machine Heads (PRL-8411, PRL-8441, Select Finish and Button Style)I recommend this productRated 5 out of 5 stars3 weeks agoBest ever
I put these on my acoustic and they feel very premium.