KT66 Valves

Browse our selection of KT66 valves. Available as singles, matched pairs, and quads. Tested in-house to top standards. 180 day warranty.

Looking for expert-built valve sets? Try our Amp Finder to jump straight to the right kit for your amp.

  • JJ KT66 image

    JJ KT66 Singles Matched Sets

     From £48.43

    JJ KT66 Singles Matched Sets Premium Tested are expertly tested  in-house. Matched sets have test certificates showing results and test conditions.. Our listening tests ensure low microphonics and noise

    Made in Slovakia.

    180 day warranty.

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