World Tube Directory

Published every other year, the World Tube Directory is the most up-to-date information sought after by tube audio designers, DIY vacuum tube audio enthusiasts, musicians, and service personnel.

In every edition of the World Tube Directory, you’ll find comprehensive listings, conveniently arranged to help you find the products and services you need. From tube testers to transformers, headphones to hand tools, this is your guide to the products you need.

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