| All Electronics | Electro-Mechanical and Electronic Parts |
| Ampwares | Parts, Tubes |
| Amtrans | Parts, Tubes |
| 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 |
| Apex Jr. | Parts |
| Apollo Amplifiers | Tube Guitar Amplifers, Parts |
| Audio Electronic Supply | Tube Amplifier Kits and parts |
| Audio Kit Mania | Parts, Kits |
| Audiokit | Tube Amplifier Kits, Speakers, Parts, Tubes |
| Bent Audio | Tube Preamplifiers, Attenuators & Potentiometers |
| Bertech-Kelex | Electronic Components and Solder Products |
| CE Distribution LLC Tube Accessories | Parts, Tubes |
| Danish Audio ConnecT | Audio attenuator, Input Selector, Phono Modul |
| Digitex | Tube Amplifiers Kits, Parts |
| DIY Hi-Fi & Tubes | Tubes, Tube Amplifiers KITS, Parts, Books |
| Diyhifisupply | Tubes, Tube Amplifiers KITS, Parts |
| Elma - switches, attenuators from Switzerland | Attenuators, Switches and more |
| Farnell | Parts, Tools |
| Goldpoint Audio Controls | High Performance Attenuator |
| Maplin Electronics | Parts |
| Metco Electronics | Parts |
| Newark Electronics | Potentiometers, Parts |
| Nutshell High Fidelity | Speakers, DIY Tube Amplifers, Potentimeters, VSAC |
| Oh's Audio | Tube Amplifiers, Tube Amplifiers Kits, Forum, Parts |
| Parts Connexion | Parts |
| Penny + Giles | Attenuators & Potentiometers |
| Philly Audio | Tube Amplifiers, Tubes, Parts |
| Play Things Of Past | Tubes, Parts |
| RP Electronics | Tubes, Test Instruments , Power Supplies |
| SAC Thailand | Tube Amplifiers , Speakers, Tubes, Parts |
| Seiden Products | Attenuators |
| Shallco | Attenuators & Potentiometers, Switches |
| TAD - The Tube Amp Doctor | Tubes, Parts |
| The Wright Sound Company | Tube Amplifier Kits |
| THEL Audio Engineering | Tube Amplifier Kits, Tubes and DIY Parts |
| Tube Amp Doctor GmbH | Tubes |
| Vishay Intertechnology Inc. | Resistors |
| Welborne Labs | Tube Amplifier Kits, Tubes and Parts |
| World Audio Design | Tube Amplifier Kits from Hifi World |