Custom Harmonicas by Andrew Zajac
The most expressive harmonicas

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Andrew's Harmonicas

Custom Harmonicas:
I customize diatonic harmonicas to connect deeply with the player. Each instrument is remarkably responsive, has amazing tone and tuning, and is adjusted to your playing style.
My harmonicas are loud. They've got fat tone. They allow effortless bending of notes.
Custom harmonica information page.
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Custom Harmonica Combs:
Darken your harmonica with one of my combs. My Dark combs™ are measurably better than factory-made combs. They are made from environmentally-responsible materials. They are beautiful, durable, airtight, waterproof and comfortable to play.
Dark combs page
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Harmonica tools and customization instruction:
Getting your harmonica to perform best is meticulous work. I offer a complete set of innovative tools. I offer learning products that help you tackle the learning curve of upgrading and customizing your harmonica.
After years of work, I'm still excited about the process! I'm learning new things all the time. I update my tools and learning materials continuously.
Tools page

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Hand Made

My custom harmonicas, combs and tools are made to order.
Production times are 16 business days or less for combs and tools.
Current production time for custom harmonicas are shown on the top of the custom page.
Thanks for your support.
Andrew

Selected blog posts

  1. Something to think about
    7 years 5 months ago
  2. The Assessment
    7 years 8 months ago
  3. Hohner reed plate serial numbers
    7 years 8 months ago
  4. Basic Kit with Grobet file
    7 years 9 months ago
  5. Short Slot Golden Melody combs
    7 years 9 months ago
  6. Custom comb for Steve Baker Special
    7 years 9 months ago
  7. To Tap or to Self-Tap?
    7 years 10 months ago
  8. Video: Answer to the most common customizing question
    7 years 10 months ago
  9. Hohner Vest Pocket Harp
    7 years 11 months ago
  10. Tuning offsets
    8 years ago
  11. Altering Standard Richter to Powerbender
    8 years ago
  12. 7-Limit Just Intonation
    8 years 3 months ago
  13. My tools are made to order
    8 years 4 months ago
  14. Dark Combs™ for Lucky 13 combs
    8 years 4 months ago
  15. Short slot combs
    8 years 6 months ago
  16. Country tuning
    8 years 6 months ago
  17. Dark Combs™ for Easttop Blues harmonica
    8 years 6 months ago
  18. Lucky seven
    8 years 9 months ago
  19. Harmonica repair mistakes #9 - bent reed
    8 years 10 months ago
  20. Lot of seven combs
    8 years 11 months ago
  21. Marine Band 1896 conversion kit (Five sets)
    9 years ago
  22. (Checklist) Basic embossing
    9 years 1 month ago
  23. (video) Harmonica repair mistakes #8 - Temperament Tantrum
    9 years 1 month ago
  24. (video) Harmonica repair mistakes #7 - When do you stop?
    9 years 2 months ago
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Custom diatonic harmonicas, Hohner Affiliated Customizer.
I customize Hohner Marine Band, Rocket, Special 20, and Golden Melody harmonicas.
Andrew Zajac, Kingston Ontario, Canada.
I use a continuous quality improvement process. I use regular evaluation and incremental steps to strive for constant improvement.
Website, text, photos, videos, download documents, designs and products by Andrew Zajac are licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
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Copyright © 2026 Andrew Zajac - All rights reserved