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Graph Tech PRN-2721-B0 Ratio 6 In-Line Electric Guitar 2-pin Machine Heads - Mini Contemporary Style / Black... Demo

Tuners, 6 in Line, Classic Shape, 2-pin Casing, and Ratio Technology - Black

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$83.08
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Item has been opened and unpackaged but is in good condition and working order. Includes all original pieces.

This item was thoroughly inspected by our factory-authorized service team and is backed by Sweetwater's exclusive 2-year warranty. The images shown do not necessarily represent the condition of this particular item.

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Faster, More Accurate Tuning

Graph Tech's Ratio 6 In-Line Electric Guitar 2-pin Machine Heads offer a revolutionary new experience in ensuring your guitar is tuned more quickly and accurately compared to conventional tuner designs. Each tuner in the set boasts a custom gear ratio that makes each machine head react the same — roughly one full turn per whole tone. Because each string reacts the same, not only is tuning a more pleasant experience, but nailing alternate tunings is a much faster process. Graph Tech's mission statement is "to improve your playing experience." Here at Sweetwater, we agree that they've nailed it with their Ratio Tuned Machine Heads.

Innovative Ratio technology

Though it's a simple idea, Graph Tech's Ratio technology completely changes the way you tune your guitar. All six strings are outfitted with gear ratios that ensure you attain the same response from your wound low E string as you do your unwound high E. No matter which string you are tuning, you'll notice that one full turn of the tuner equates to roughly one whole tone pitch change. The Ratio technology makes nailing your pitch much easier and faster — and you'll love how fast it is to get to Drop D and other alternate tunings.

Easy installation with no drilling

One of the greatest benefits of the Ratio Tuned Machine Head system is that they install onto your guitar's headstock without any drilling or other destructive procedures. They are also completely reversible. Graph Tech's InvisoMatch mounting plates ship with the tuners. The machine heads mount directly to those plates and aren't screwed into your instrument. As their name would suggest, the InvisoMatch mounting plates are completely hidden by the Ratio Tuned Machine Heads, offering a sleek, low-profile look.

Graph Tech: play better, sound better, perform better

Graph Tech has made it their personal mission to supply the products that will make your instrument play better, sound better, and perform better. From the company's popular String Saver saddles to their TUSQ string nuts that can be found on countless manufacturers' guitars, the company's products are a mainstay in the guitar and bass industry. Just about every player at Sweetwater owns something created by Graph Tech, because — like their mission statement promises — they never fail to improve our playing experience.

Graph Tech Ratio 6 In-Line Electric Guitar 2-pin Machine Heads - Mini Contemporary Style/Black Features:

  • Tuner machine heads that make tuning easier and faster
  • Each tuner reacts the same to the same amount of force
  • Mini contemporary design
  • 1 turn is approximately 1 whole tone
  • InvisoMatch mounting plates allow quick mounting with no extra screw holes

What is Demo Gear?

At Sweetwater, we're so picky that what we call a "demo" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

What demo means to us is that we've had it out of the box, or maybe it was in a customer's hands for a few days and isn't "factory fresh" as a result. Every demo item we sell has Sweetwater's 2-year Total Confidence Coverage™ warranty, and has been tested and verified up to "new" specs by our factory-authorized technicians to make sure it's in perfect working order before we ship it to you.

When you buy a Demo item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Demo equipment. Purchasing demo gear from Sweetwater is a smart and safe way to save!

Warranty Info

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Free 2-year Warranty

Sweetwater's 2-year Total Confidence Coverage™ Warranty gives you extra peace of mind at no extra cost.

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Tech Specs

  • Intended Instrument: Guitar
  • Configuration: 6-Inline
  • Finish: Black
  • Gear Ratio: 39:1, 24:1, 20:1, 35:1, 20:1, 12:1
  • Peg Diameter: 0.234" (peg), 0.385" (9.7mm peg hole)
  • Manufacturer Part Number: PRN-2721-B0

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Customer Reviews

Write your review
Rated 5/5

Graph Tech Ratio 6-inline

The Graph Tech Ratio 6 inline black 2 pin machine heads are a perfect drop-in for Charvel guitars. I would recommend the tuners to anyone. Fantastic product!! Thanks Matt for all your help!
Rated 3/5

Swap the screws!

Broke the head of a screw off attempting to install one of the machines, so now there's a screw stuck in my headstock. I expected better out of a Graph Tech product!
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