Custom Harmonicas by Andrew Zajac
The most expressive harmonicas

Main navigation

  • Home
  • Custom Harmonicas
  • My Combs
  • Tool Kits and Accessories
  • Learning Products
  • Blog
  • Service
  • Dealers
  • About
  • Contact

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.
_____________________
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
________________________
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

User account menu

  • Cart
  • Log in

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. Tuning tips using my reed support tool/Plinker and a Swiss file
    6 hours 30 minutes ago
  2. Flatness is fundamental (Black Combs)
    5 days 13 hours ago
  3. New combs for 2026
    1 week 5 days ago
  4. There’s no mystery left in custom harmonicas
    1 month 2 weeks ago
  5. Adapting to changes in trade and imports
    2 months 4 weeks ago
  6. What's it like to use an analog Strobe Tuner?
    5 months 2 weeks ago
  7. Compact reed plate claws tweak
    8 months 1 week ago
  8. Music makes us human
    8 months 2 weeks ago
  9. The Hockey Stick (for tuning the harmonica)
    8 months 2 weeks ago
  10. (FAQ) Should a rank beginner buy a custom harmonica?
    8 months 3 weeks ago
  11. A good file for tuning a reed.
    9 months 1 week ago
  12. Dark Comb model types
    9 months 1 week ago
  13. "Is there a way to fix it without breaking it or is it just dead?"
    10 months 2 weeks ago
  14. Flat Sanding the draw reed plate for airtightness
    10 months 3 weeks ago
  15. How to use my Quick Customizing Videos
    11 months 1 week ago
  16. Multi tool: One of the reasons I find it really cool!
    1 year 2 months ago
  17. Andrew Zajac customization multi-tool
    1 year 4 months ago
  18. Essential Tool Kit
    2 years 2 months ago
  19. Essential Tool Kit
    2 years 2 months ago
  20. Weird Science
    2 years 3 months ago
  21. From an email: Common question about temperament
    2 years 3 months ago
  22. Off-menu items
    2 years 3 months ago
  23. "How do I make my harmonica play like a custom harp?"
    2 years 3 months ago
  24. Replacement reeds odyssey
    2 years 8 months ago
Pagination
  • Current page 1
  • Page 2
  • Page 3
  • Page 4
  • Page 5
  • Page 6
  • Page 7
  • Next page Next ›
  • Last page Last »

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.
Terms of use

Copyright © 2026 Andrew Zajac - All rights reserved