| Allied Electronics | Parts |
| Amtrans | Parts, Tubes |
| Angela Instruments | Parts, Speakers, Tubes |
| Audio Electronic Supply | Tube Amplifier Kits and parts |
| Audiokit | Tube Amplifier Kits, Speakers, Parts, Tubes |
| Beau Interconnect | Connectors, Terminal Strips |
| Bertech-Kelex | Electronic Components and Solder Products |
| Canare Corporation of America | Cables, Connectors |
| Chimera Labs | Tube Amplifiers, Cables, Tubes, Vintage Audio Equipment restoration, sale |
| Cliff Electronic Components | Connectors |
| Design Build Listen - DIY HiFi Components & Kits | Cabinets & Hardware, Knobs, Connectors |
| DHTsound.com | Japanese Portal, Parts, Tube Amplifier Kits, tubes, forums, links |
| Digitex | Tube Amplifier Kits, Tubes, Speakers, Parts |
| Eichmann eXpress | Cables |
| hificollective | Tube Amplifier Kits, Parts |
| Hinkel-Elektronik | Parts |
| Jameco Electronics Electronic Components | Parts |
| Ken's Electronics | Tubes, Parts |
| Leeds Electronics | Tubes and Parts |
| Main Electronics Receiving Tube Page | Tubes, Parts |
| Maplin Electronics | Parts |
| Mark Electronics | Parts |
| Marshal Electronics, Inc. | Connectors, Cables, Tube Microphones |
| Memory Protection Devices Inc. MPD | Connectors |
| Minute Man | Parts |
| Mundorf-Online | Parts not only for speakers |
| NeutrikŪ | Connectors |
| Newark Electronics | Potentiometers, Parts |
| Octave Electronics | Parts |
| Patuxent Communications | Parts, Transformers |
| Richardson Electronics | Tubes and Parts, Amperex Bugle Boy |
| RP Electronics | Tubes, Test Instruments , Power Supplies |
| RS - Components | Parts |
| THEL Audio Engineering | Tube Amplifier Kits, Tubes and DIY Parts |
| THL Audio | Parts |
| Triode Electronics Online Catalog | Tubes, Parts, Tube Data, Schematics, Links |
| TRIODES.nl | Tubes, Parts |
| Van Weelden | Tubes, Parts |
| WBT Distribution GmbH. | RCA Type Connectors, Binding Posts, Spade Connectors, Silver Solder, Banana Plugs |
| WBT USA | RCA Type Connectors, Binding Posts, Spade Connectors, Silver Solder, Banana Plugs |
| Welborne Labs | Tube Amplifier Kits, Tubes and Parts |