The String Butler – Guitar Tuning Improvement Device

Link to the Official Website for the String Butler from Dietrich Parts in Germany: Link

String Butler Installation Instructions in English: Link

String Butler Product video page: Link

String Butler images: Link

String Butler Testimonials: Link


Who is the String Butler for?

  • Is your guitar difficult to tune?
  • Are the machine heads on your guitar difficult to turn?
  • Are you tired of having to retune a couple of strings after every song in your setlist?
  • Then you will love the String Butler!

What is the String Butler?

The Patented Design attaches to the head of your guitar and corrects the string angle as it passes through the nut.

How does the String Butler make my guitar better?

If the design of a guitar headstock doesn’t position the machine heads directly in line with the slot in the nut, then high friction is generated between the nut and the string because the string angle has to change above the nut.  This friction makes it difficult to tune the guitar accurately and the tuning may change while you are playing as the strings move, vibrate, and flex.  In severe cases it is also difficult to turn the machine heads which can damage them.  The String Butler sends the strings straight through the nut which reduces this troublesome friction.


The String Butler Close-Up
String Butler uses low friction rollers to guide the strings straight through the slots in the nut

Will it work with my Guitar?

The device is designed to correct the string angle of guitars with a rectangular machine head pattern.  This shape (illustrated below) is very common for some manufacturers:

String Butler Headstock Compatibility

If your guitar has a headstock like the one on the left above, and strings 2, 3, 4, or 5 are not in alignment with the nut, then it should be compatible.  However, if your guitar doesn’t use nuts to hold the machine heads in place then short wood screws will be required to attach the device to the guitar.  The following graphic explains:


As with any upgrade or repair work, care should taken to not cause damage your guitar:

Installation Disclaimer

The following graphics explain how to measure your guitar to insure that it will attached to your machine heads using the existing nuts:


What colors are available?

It is available in Metal or Acrylic material and the metal version is available in 3 colors: Black Chrome, Gold Chrome, and Silver Chrome.

The String Butler V3 is available in 3 Chrome Plated Metal Colors and Clear Acrylic

Installation Instructions

Detailed Installation Instructions in English: Link

In general you have three options as illustrated in the following graphic:


Manufacturer Warranty:

This product is covered by a 24 month warranty against defects in material or workmanship starting from the time of purchase when purchased from an authorized Dietrich Parts dealer.  Please contact Dietrich Parts directly for warranty claims at:

If you have any further questions about this product please contact us using the Contact Us Page.

Are you already enjoying a String Butler?  Send us a picture of you with the product and we will feature your picture on our social feeds!  Creative pictures are encouraged!  Simply email your picture and a story or testimonial to

This page was created and is copyright protected by Laplace LLC, a North American Dealer of the String Butler.  Images are owned by Laplace LLC or Dietrich Parts.  All rights reserved. 

product image
Author Rating
Aggregate Rating
4.5 based on 2 votes
Brand Name
Deitrich Parts
Product Name
String Butler
USD 46.00
Product Availability
Available in Stock

One thought on “The String Butler – Guitar Tuning Improvement Device

  1. I just installed string butler on my Gibson SG that would not stay in tune, and now I’m jumping for joy! My guitar would not stay in tune for anything. Well, it would be ok with Nut sauce, or pencil graphite but would not last. After I installed the butler, and reset my strings, I played for maybe an hour, and stretched my strings to the limit! they stayed in tune. Now my Gibson SG sounds as good as a PRS, or any Guitar I have ever played before. I woke up this morning, grabbed my Guitar and jammed and its still in tune! I love you guys. I need another one for my Taylor Big Baby Acoustic but I cannot install it he way you want me to because the truss rod cover is in the way, so ill install it like I did on my SG. I don’t see any reason why it wont work installed that way. Thanks, I’m very happy.

Leave a Reply