Alan Kimmel's tube audio laboratory (Good ideas on how to use a triode!).
Aquablue (Tube DIY Paradiso, tube and part supplier).
Audiolive (to reproduce recorded music as a live performance).
Audio Research (American tube hifi equipment).
AVVT factory homepage (Alesa Vaic Vacuum Technology WWW-pages).
Bartolucci (Double C-core output-transformers).
Black Art (Designers and manufacturers of hand wound transformers for audio).
Cary Audio Design (Very beautiful and well designed amps).
Classic Valves (Source for NOS & New Production Vacuum Tubes).
Conrad-Johnson (It just sounds right!).
Decware (A small spot in the universe with a very creative center).
Demostenes (Norwegian tube, parts, books, etc supplier).
EIFL corporation (A good shop in Japan, Tango transformers and more).
Glassware, audiodesign software (It's time to put some glass in your Windows™).
Goldpoint Stepped Attenuator Controls (High performance level controls).
Hypex Electronics (Manufacture of high class power amplifiers for active loudspeakers).
Jensen transformers (Bringing Science to Sound).
Kiewa Valley (Good information about Leak, Wharfedale, Tannoy and their own brand).
KW Tubes (Russian vacuum tubes for sale).
Lundahl (manufacturer of quality audio and tube amplifier transformers).
Magnequest (Very good transformers here).
Magnetic SA. (French transformer makers).
McIntosh (Roger Russell, designer of McIntosh loudspeakers).
Micronetics (A lot of tubes for sale).
Orchid Precision audio (Beauty, Rarity, Power).
Sovtek audio tubes (Tubes, Russian style..).
Sowter transformers (Great English coil/transformer factory).
Sun audio (A good shop in Japan, source for Tamura transformers).
Svetlana Electron devices (The home of the Svetlana products).
Talisker (Music reproduction the best old way).
Tamura (Transformers from Japan).
Vacuum Tube suppliers (A big list of tube and stuff suppliers).
VT-components (By far the best tube and parts shop in the Netherlands).
VT data, EPS/solutions (A complete tube manual on your computer).