Welcome to KCA NOS and new production Tubes

QUALITY NOS and New Production audio tubes since 1997


Visit our online store for easy ordering of NOS and new production vacuum tubes. Choose from names like RCA, Mullard, GE, Philips, Amperex, SED (Svetlana Electron Devices), Sovtek, JJ, Tung Sol (NOS and Reissue) and Electro Harmonix.

We specialize in repair and modification of vintage, hand wired tube amplifiers. Fender and Marshall amps are our focus.

Browse tube and amplifier FAQs, tube substitution guides, user reviews, amplifier tube layout diagrams and other useful tube/amplifier information. Sitemap