D Addario

Kaplan Orchestral Upright Bass Strings

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  • Kaplan Orchestral Upright Bass Strings, standard package front
  • Kaplan Orchestral Upright Bass Strings, standard package back
  • Kaplan Orchestral Upright Bass Strings, standard package side
Our Low Price: $195.99

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Allergy Advisory: Product Contains NickelThe Kaplan strings are D'Addario's premium entry into the premium orchestral strings market.

The Kaplan double bass strings are designed primarily for bowed string players. They were created to provide a rich tone, variable dynamics, and excellent bowing response. They are clear, yet warm in their tonal color - regardless of what register you're playing in.

This is accomplished by mixing various string winding materials to achieve the best playability and sound from every string. So, while all Kaplan Bass strings have a stranded steel core, the Kaplan Bass G string is titanium wound, and the A and D strings are nickel-wound. The E string is tungsten-wound.

Includes our exclusive Gollihur Music tipsheet to get the most out of your purchaseThese strings should be a favorite among the most discerning orchestral musicians. The strings are are reportedly very easy to bow, with a fast response, and have a "soft" feel both under the left hand and under the bow - making them an "easier" playing string. Yet they have a great range of dynamics and sound - you can really get them projecting loudly, without having the note distort out of tune.

And yes, they can be played pizz! For classical pizz, they have the appropriate and expected big, round tone. They are a darker sounding string, by design, so they don't have the brightness you might expect in "modern jazz," but they're not dead and thuddy, either.

The strings are scaled to fit 3/4 size bass with a playing length of 41 3/4 inches (1060mm). The medium tension strings are the best choice for a majority of players, but light and heavy sets are also available.


Tension figures:

String ¾ med ¾ lt ¾ hv
G 62.0 58.0 65.0
D 65.0 61.0 68.0
A 68.0 63.0 72.0
E 69.0 65.0 73.0
Ext E/C 69.0 65.0 73.0
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Warranty Information

I've experienced a problem with a string (or set of strings). What should I do?

We are sorry to hear of your experience. If you experience a problem with your strings (or string set), you may contact us (D'Addario) to see whether a manufacturing mishap is the cause. If you wish to return the string(s), visit Please return the string or set in question in its original packaging (including corrosion intercept bag if possible). This will help us determine if a defect or other malfunction has occurred. Upon receipt and evaluation, if a manufacturing defect is revealed, we will quickly send you a replacement.

NOTE: Though it may not be the case in your situation, please keep in mind that premature string breakage is often caused by burrs or rough edges that develop at the nut or bridge/saddle. These rough edges are often difficult to see, but can be ruthless on strings. If your string continuously breaks at the nut or bridge, please check these points of contact for a nice, smooth surface. If burrs or rough edges are found, contact your local music shop or luthier to perform the necessary minor repair to resolve this common problem.
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4 Reviews

  • 5

    I know these aren't hybrid strings, but...

    Posted by Neil Jendon on Oct 20th 2023

    I play mostly jazz, but I want to incorporate more bow in my playing. I decided to try strings that were specifically for arco, and these are definitely that. They are easy to bow and sound really good, considering my novice arco technique. Dynamics and vibrato come easy. The pizz tone is fine. The attack isn't super strong or biting, but the sustain is excellent and the tension isn't fatiguing.

  • 5

    Kaplan strings

    Posted by James McGiffin on Jan 16th 2023

    I gave these a try and am happy with them. I was nervous about the G string, which sounded harsh at first bowing, but it has mellowed over a couple of weeks. I am now completely pleased with the set.

  • 5

    Kaplan orchestral upright bass strings

    Posted by Gregory Gortmaker on Jan 12th 2023

    Put these on an upright I had purchased in 2017. The label in the bass said it was manufactured in 2015. So, yes way overdue. I use this bass in a community orchestra. So mostly arco. Made a huge difference. Easy to bow, very even tone across all strings and the “dead spots” went away. I’m cookin’ now!

  • 5

    D'Addario Kaplan Light upright bass strings

    Posted by Arno Vosk on Sep 17th 2021

    I put a set of these on my Shen 180 and it sounded like a new instrument! At least from my position behind the bass, which is where I do all my listening, eh? I was so impressed I wrote to D'Addario, and the person who answered me said he had the same experience. They are very comfortable to play and have a great sound on this bass. I play orchestral almost exclusively, but pizz seems pretty good to me too. My only complaint is that the G can sound a little shrill if I'm not careful to bow it carefully, but that could be a fault of my playing. Highly recommend!

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