| A STRING | Tube Guitar Amplifiers, Tubes |
| Abe Music | Retailer, Tubes |
| Adisa | Tubes, Tube Amplifiers, Valve Art Tubes |
| AHF Art Audio | Transformers, Tubes, Schematics |
| Ahrens-Audio | Vintage Tube Amplifiers, Tubes |
| ALE Acoustic Products | Speakers |
| Allegro Sound | Tubes, NOS microphone tubes and nuvistors |
| Allen Bradley | Vacuum Tubes Retailers New and NOS Tubes |
| Amptek | Tube Guitar Amplifiers, Tubes, Books, Parts |
| Andix | Vintage Tube Audio Equipment |
| Angela Instruments | Parts, Speakers, Tubes |
| Antique Electronic Supply | Attenuators, Books, Capacitors, Enclosures, Guitar Parts, Knobs, Manuals, Potentiometers, Resisitors, Tubes, Tube Boxes, Tube Sockets, Speakers,Tools, Transformers, Wires |
| Antique Electronic Supply | Attenuators, Books, Capacitors, Enclosures, Guitar Parts, Knobs, Manuals, Potentiometers, Resisitors, Tubes, Tube Boxes, Tube Sockets, Speakers,Tools, Transformers, Wires |
| Antique Radio Repair | Tube Radios & Related Vintage Items, Schematics |
| Antique Vacuum Tubes - Electron Tubes | Tubes |
| Aqua Blue | Tube Amplifier Kits, Speakers, Parts |
| Arizona Tube Audio | Tubes |
| ARP Electronics | Tubes |
| ATSI Advantage Tube Services | Tubes |
| ATSI Tubeman | Tubes |
| Audio Electronic Supply | Tube Amplifier Kits and parts |
| Audio Kit Mania | Parts, Kits |
| Audio Note | Tube Amplifiers, Dac's, Speakers, Parts |
| Audio Part Laboratory APL | Tubes, Transformers, Parts, Vintage gear |
| Audio Products Audio Information | Alliance Audio, Chimera One , Vintage Audio |
| AudioAPL | Koma Electronics, tubes, parts |
| Audiofool | Retailer, Tubes |
| Audiokit | Tube Amplifier Kits, Speakers, Parts, Tubes |
| Audiolamp | Tubes, Capacitors |
| Audion - La tua rivista di elettronica | Tubes, Books, Speakers, Records |
| Audioparts | Parts |
| audiotubes for hi-fi hi-end units | Tubes |
| Audiotubes.de | Tubes |
| Automatic Electric Europe | Tubes, Transformers |
| Baco | Tubes |
| BD Electronics | Vacuum Tubes Retailers New and NOS Tubes |
| Bernd Kuhlmann | Tubes |
| Billington Valves and Tubes of Billingshurst | Tubes |
| Borbely Audio | Tube Amplifier Kits, Tubes |
| BorderPatrol | Tube Amplifiers, PSU's |
| Brent Jessee Recording | Tube Database, Tubes, Old Radios |
| BTB Elektronik - Vertriebs GmbH | Tubes |
| Candyman Electronics | Tubes, Parts |
| CE Distribution LLC Tube Accessories | Parts, Tubes |
| Centro Laboratorio HI-FI | Tube Amplifiers, Parts |
| Chelmer Valve Company Ltd | Tubes |
| Chimera Labs | Tube Amplifiers, Cables, Tubes, Vintage Audio Equipment restoration, sale |
| Ciel-Electronique | Tubes, Parts |
| Classic Components Inc. | Tubes, Japanese Parts |
| Coherent Classic Audio | Vacuum Tubes Retailers New and NOS Tubes |
| Colomor (Electronics) Ltd | Tubes |
| Crowthorne Tubes | Tubes |
| D and C Electronics | Vacuum Tubes, Magnetrons and Sockets |
| Daily Electronics | Tubes |
| Daves World of Things From the Past | Tubes, Tube Radios |
| dBm Pro Audio-Music Services! | Tubes, Tube Amplifier Services |
| Demostenes 2000 | Tubes |
| DHTsound.com | Japanese Portal, Parts, Tube Amplifier Kits, tubes, forums, links |
| Digitex | Tube Amplifiers Kits, Parts |
| Digitex | Tube Amplifier Kits, Tubes, Speakers, Parts |
| Direct Components | Tubes, Capacitors |
| Direct Heated Rob's Home | DIY Tube Amplifiers, Tubes |
| Diyhifisupply | Tubes, Tube Amplifiers KITS, Parts |
| Dr. Tube | Schematics, Link List, Tube Database |
| EarlyWireless (Lorne Clark) | Tube Radios & Related Vintage Items, Tubes |
| Ebisugang | Tubes |
| Edikron | Tubes |
| EES Audio | Tube Amplifiers, Tubes, Parts |
| EL Tubes | Tubes |
| Electro-Harmonix | Tubes, Professional Equipment for Musicians |
| Electron Tubes and Vacuum Tubes for Industry | Tubes |
| Electron Tubes and Vacuum Tubes from Daily Electronics | Tubes |
| Electron tubes and-or Vacuum tubes | Tubes, Manuals for old RCA Radios |
| Electron Tubes, Power Semiconductors | search for Tubes |
| Electron Valve, Music Reference | Tubes, Tube Amplifiers |
| Electronic Tubes | Tube Amplifiers, Tubes |
| Electube | Tubes |
| Esco | Tubes, Parts |
| Espace Composant Electronique | Tubes |
| ESRC | Tubes |
| Evatco | Tubes |
| Frag Jan zuerst- Ask Jan first | A lot of information regarding old tube radios |
| Fust-electronica | Tubes |
| Fust-electronica, Vacuum Tubes | Tubes |
| GLIM Audio homepages! | Tube Amplifiers, Tubes, Parts |
| Gootee Electronic surplus | Tubes, Radio Collection |
| GREENSTONE USA | Tubes |
| Greenstone USA | Tubes |
| Hadley Records | Tubes |
| Hal | Tubes |
| Halfin S.A. | Tubes, Forum |
| HB-AmpDesign | Tube Amplifier Kits, Tubes, Parts |
| Helmut Singer Elektronik | Tubes |
| HF-shop | Tubes |
| hifitubes.de | Tubes |
| High-End Audio | Tubes |
| Hinkel-Elektronik | Parts |
| House of Tubes | Tubes |
| IGA Valves Bilbao | Tube Seller |
| INnovative Audio | Tube Amplifiers, Tubes, Speakers |
| InterStudio | Tubes |
| JAC-MUSIC | Tubes |
| Jaeger-Meisterelectronics | Tubes, Tube Amplifier Service |
| Jim's Citation Amp and Vacuum Tube Page | Tubes, Information |
| Jingau Enterprise | Tubes, Transformers, Parts |
| JM Audio | Retailer, Vacuum Tubes Retailers New and NOS Tubes |
| Kame | DIY Tube Amplifiers, Tubes |
| KCA NOS Tubes | Tubes, Information about Tube Audio - Articles |
| Ken's Electronics | Tubes, Parts |
| Klare | Tube Amplifiers, Transformers, Tubes |
| Korato | Tube Amplifiers, Tubes |
| Kozakai Denshi | Tubes, Parts, Radios |
| KW Tubes | Tubes |
| Lord Valve NBS Electronics | Tubes |
| MachMat's analogica | Tubes, DIY Tube Amplifier |
| Marine Ode | Tubes |
| Media Concepts | Books, Links, Tubes |
| Metco Electronics | Parts |
| Michael Audio | Tubes, Vintage Tube Audio Equipment, Retailer |
| Micronetics NOS Tubes | Tubes |
| Mike's Old Vacuum Tubes | Tubes |
| Mojo | Tubes, Tube Guitar Amplifier Parts |
| NBS Electronics Lord Valve | Tubes, Tube Amplifier Services |
| New Sensor Corporation | Tubes, Parts, Guitar Amplifiers |
| Nikolic Dragan | Tubes, Tube Amplifiers |
| NOS Electron Valves | Tubes |
| NOS Tubes | Vacuum Tubes Retailers New and NOS Tubes |
| NOS tubes for high end audio | NOS Tubes for high end audio |
| Octave Electronics | Parts |
| oldtube.com | Tubes |
| Oppermann Electronic | Parts |
| Organized Services | Tubes |
| Orvac Electronics | Tubes, Parts |
| Pacific Decal | Tubes |
| Partridge Electronics - Equipment and Components | Tubes, Transformers, Parts |
| Parts Connexion | Parts |
| Parts Express | Electronics and more |
| Patuxent Communications | Parts, Transformers |
| Pegasus Developments Ltd | Tubes and Electronic Components |
| Penta Laboratories | wide selection of Audio Tubes |
| Pispola Patrizia | Componenti elettronici |
| Play Things Of Past | Tubes, Parts |
| Postes Radios | Tube Radio site, Tubes |
| PR Novelty | Tube Radios, Radio Services, Tubes |
| Pyndt Electronic Trading ApS | Tubes |
| Radio Daze | Tubes, Parts, Restoration |
| Radio Doc's | Ham Radio |
| Radio Electric Supply | Tubes |
| radio electronic tubes | Tubes |
| Radio Relics | Tube Amplifier Service, Tubes |
| Radio Tube Supply | Tubes |
| Radio-Antik | Tube Radios & Related Vintage Items |
| Rakumeisha | Tubes, Records |
| Rare Tubes | Vacuum Tubes Retailers New and NOS Tubes |
| Reinhöfer Electronic | Tube Amplifier Kits, Tubes, Parts |
| Remmos Audio | Tube Amplifiers, Tubes |
| RF Parts Company™ Amateur Radio Catalog | Tubes, Parts |
| Rör och rörpriser | Tubes |
| Round-Up Electronics | Tubes, Tube Radios |
| Rsc-Valves.com, your site for radio tubes | Tubes |
| R-Vac Electronics | Tubes |
| SatCure Audio | Tubes, Vintage Tube Audio Equipment |
| Schuricht | Tubes, Parts |
| Shuffle Guitars | Tubes |
| SJS Electroacoustics | Tube Amplifiers, Parts, Speakers |
| SND Tube Sales | Tubes |
| Société Radio Tubes | Tubes |
| Sovtek | Tubes, Parts, Tube Guitar Amplifiers |
| Sphere Research Corporation | Tubes |
| Stark Electronic | Tubes |
| Surplus Electronic | Tubes, Tube Radios |
| Surplus Electronic Test Equipment Eltech | Tubes |
| Surplus Sales of Nebraska | Vintage Tube Audio Equipment, Tubes |
| TAD - The Tube Amp Doctor | Tubes, Parts |
| Tatoo Amplification | Tube Guitar Amplifiers, Tubes |
| Tecno Surplus | Tubes |
| Tektron-Italia | NOS Tubes, Radios, Tube Amplifiers, Service |
| Teletone Radio | Tubes |
| The Raymond Sarrio Company Electron Tubes | Tubes |
| The Tube Cente | Tubes, Tube Sockets |
| The Tube Shop | Tubes, Books |
| The Tube Store | Tubes |
| The Tubestore | Tubes |
| THEL Audio Engineering | Tube Amplifier Kits, Tubes and DIY Parts |
| THL Audio | Parts |
| Thomas Bruckner | Tubes |
| Toitot | Tubes |
| Tony Welsh | Tubes, Capacitors |
| Torres Amps | Tube Guitar Amplifiers, Kits, Parts, Tubes |
| Torres Engineering | Tube Amplifier Kits, Tube Guitar Amplifiers |
| Tube | Tubes |
| Tube Amp Doctor GmbH | Tubes |
| Tube Audio Professional | Tubes |
| Tube Korea | Tubes |
| Tube World | NOS Tubes |
| Tubekorea | Tubes |
| Tubemonger | Tubes, Forum |
| Tubes 4 all | Tube Amplifier Kits, Parts |
| TubeSeller.com | Tubes, Information about Tubes |
| Tube-Shop | Tubes |
| Tubeshop - Dir Röhrenklinik | Tubes |
| Tube-Shop.com | Tubes |
| TubesPlus.com | Tubes |
| Tubetronic | Tubes |
| Uncle Spot webpage | Tube Guitar Amplifier Restoration, Tubes |
| Vacuum Tube Galaxy! | Tubes |
| Vacuum Tube Supply | Tubes |
| Vacuum Tube Valley | Tube Audio Magazine, Tubes, Parts, Service, Vintage Hifi Rebuild Kits, Capacitors |
| Vacuum Tubes (Electron Tubes) | Tubes |
| Vacuum Tubes (Electron Tubes) | Tubes |
| Vacuum Tubes (Electron Tubes) N9TEW tube Sales | Tubes |
| Vacuum Tubes by Thel | Tubes |
| Vacuum Tubes from Brent Jessee Recording | Tubes |
| Vacuum Tubes from Radio Electric Supply | Tubes |
| Vacuum Tubes, Electron Tubes, Tubes, Tube Testers and Electronic Parts | Tubes, Parts, Testers, Manuals |
| Vacuum Tubes, Electron, NOS vacuum tubes | Tubes, Sockets |
| Vacuum Tubes, Inc., Electron Tubes | Tubes, Sockets, Manuals, Schematics, Information, Radios |
| Vacuumtubes | Tubes |
| Valve Electronics | Tubes, Parts, repair and restoration of Radios |
| ValveHeart | Tubes, Schematics |
| Van Weelden | Tubes, Parts |
| Vintage Audio World | Vintage Tube Audio Retailer |
| Vintage Audio World | DIY Tube Amplifiers, Tubes |
| Vintage Electronics | Tubes |
| Vintage Hi-Fi | Tubes, Parts, Tube Amplifier Kits |
| Vintage Sound | Vintage Hifi, NOS tubes |
| Vintage Tube Services | NOS Tubes |
| Vip elettronica s.r.l. | Tubes |
| Watford Valves | Tubes and Equipment for Musicians |
| Welborne Labs | Tube Amplifier Kits, Tubes and Parts |
| Well Audio Labs | Capacitors, Resistors, Transformers |
| West Highland Semiconductors | Tubes |
| Wieser Electronic | Tubes |
| YS-Audio | Valves Tubes Audo Online Magazine |