The Dusty Duo-Tune


Custom Duo-Tune

fits Dusty Strings harps


Concert Duo-Tune

fits many pedal harps and non-Dusty lever harps


Universal Duo-Tune

adjusts to fit almost any harp


Out of Stock

Spare Batteries

pack of 5


Replacement Tuner Head

with reinforced joint


Due to a supply issue, Universal Duo-Tunes are currently out of stock. Unfortunately, we aren't sure when they will be available again, or what the price will be, but we do expect the price to go up. If you would like to be alerted when we have more information, please email or call us and we will gladly put you on our list. Thanks for your patience!


Tuning a harp typically requires an electronic tuner, a clip-on tuner pickup and a tuning wrench, as well as a certain amount of coordination. We do a lot of harp tuning at Dusty Strings and this awkward process was begging for an improvement. We've now combined our harp tuning wrench with the Snark clip-on electronic tuner to make a single handy tuning device, the Dusty Duo-Tune. Now you can pluck a string with one completely free hand while the tuning wrench and electronic tuner are in your other hand picking up the vibrations through the tuning pin, displaying the note on the attached LCD screen, and allowing you to adjust the pin - all at once. No more juggling tuners, wires, clips and wrenches and wishing you had three hands!


  • The same elegant and ergonomic hardwood handle as our Custom Wrench
  • Colored LCD display is readable in the dark
  • Swivel joint allows you to turn on and adjust the angle of the display with your thumb while tuning
  • Star-tipped wrench (except for Universal model) seats itself on the pin with less fussiness than a square-tipped wrench requires
  • No need for a clip-on tuner pickup. The string's vibrations travel directly through the tuning pin to the Duo-Tune, which means that it picks up notes accurately up and down the whole range of the harp without interference from other room noises.
  • Snark tuner has a nifty built-in visual metronome feature as well as pitch calibration and auto shut-off after two minutes
  • Battery is included, as well as a spare (3-volt #CR-2032)

Note: The Snark tuner carries a one-year warranty against defects in manufacturing. Should anything happen to yours outside of the warranty, it is possible to replace just the tuner head without buying a whole new Duo-Tune wrench.


There are three models of the Dusty Duo-Tune to fit different sizes of harp tuning pins. The size that each wrench fits is engraved on the handle, but we realize most people don't have calipers readily available to measure their tuning pins. So here is a list (to the best of our knowledge) of harp makers and the size of wrench we expect will fit their harps. Unfortunately, we can't make any guarantees, and current harps may not necessarily have the same tuning pins as older harps by the same maker. We do our best to add to this list as we get more information about pin sizes.

Note: These wrenches are meant for standard harp pins, which go all the way through the neck of the harp and stick out on both sides. Some harps (Harpsicles, for example) use zither pins instead, which only stick out on one side of the neck. Because these pins are a different shape, Dusty Strings harp wrenches will not fit well and will eventually chew up the pins. However, our hammered dulcimer tuning wrenches will work!

Custom Duo-Tune (For tuning pins with a square tip diameter of .176" or 4.5mm)

  • Dusty Strings
  • McFall
  • Pierpont

Concert Duo-Tune (For tuning pins with a square tip diameter of 3/16" or .188" or 5mm)

  • Argent Fox
  • Blevins
  • Camac
  • Fisher
  • Harps of Lorien
  • Heartland
  • Kortier
  • Lyon & Healy
  • Lewis Creek
  • Lynn Lewandowski
  • Marini Made
  • Muma
  • Musicmakers
  • Noteworthy
  • Pilgrim
  • Pratt
  • R Harps
  • Salvi
  • Sligo
  • Stanley & Stanley
  • Starfish
  • Stoney End
  • Swanson
  • Thormahlen
  • Timothy
  • Venus
  • Webster
  • Wickford

Universal Duo-Tune (Adjusts to fit harp tuning pins from .160" or 4mm to .220" or 5.6mm. Does not work well on zither-type harp pins; see note above.)

  • Aoyama
  • Clark
  • Rees (but not Harpsicle)
  • Triplett


5 Review(s)

  • Steve
    Jun 7, 2019
    I bought your Concert Duo-Tune last month and love it. It is better able to isolate the pitch of the string being tuned, even for more resonant harps that sometimes "over-ride" the actual pitch of the string being tuned. And so, I'm getting another because this has quickly become my favorite!
  • Blair
    Mar 21, 2019
    I'm a brand-new harp player, and I don't have any process to compare to. This certainly makes tuning my new FH26 very easy and straightforward.

    However, I do have one minor gripe.... The two highest strings on my FH26; F6 and G6, are too high for the Snark Tuner to register. I have to tune those "by ear" using the lower octave as a guide. Fortunately, my ear is pretty good.

    Reply from Dusty Strings

    Mar 21, 2019
    Thanks for the feedback! It is difficult for a lot of tuners to register the highest strings on a harp. Using your ear is a great way to go! We've also found that sometimes plucking the string an octave lower seems to clue the tuner in to what note you are trying to tune, and it will then register the higher string as you adjust it.
  • Susan
    May 30, 2018
    I have just purchased my first harp from Dusty Strings & saw the custom Duo-Tune & decided to try it. Well, I just love it because it affords me great ease when tuning. I have a spine issue & I was concerned about doing an adequate job of tuning my harp, especially these first few weeks of many tuning sessions as my beauty settles into it's new home environment. Even if you don't have health constrictions, this is more than handy because it really speeds up tuning. I would recommend it to anyone looking to make tuning their harps quick & efficient.

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