| All Electronics | Electro-Mechanical and Electronic Parts |
| Allied Electronics | Parts |
| Angela Instruments | Parts, Speakers, Tubes |
| Apex Jr. | Parts |
| Apollo Amplifiers | Tube Guitar Amplifers, Parts |
| Audio Note | Tube Amplifiers, Dac's, Speakers, Parts |
| Audiokit | Tube Amplifier Kits, Speakers, Parts, Tubes |
| Bertech-Kelex | Electronic Components and Solder Products |
| CE Distribution LLC Tube Accessories | Parts, Tubes |
| DHTsound.com | Japanese Portal, Parts, Tube Amplifier Kits, tubes, forums, links |
| Electro-Mech Components | Switches |
| Elma - switches, attenuators from Switzerland | Attenuators, Switches and more |
| Esco | Tubes, Parts |
| Farnell | Parts, Tools |
| Flame Enterprises Inc. | Switches |
| Futurlec | Parts |
| Grayhill, Inc. | Switches, Rotary switches |
| Guitar Tube AMP Items | Tubes, Capacitors, Resistors, Transformers |
| Handmade Electronics | Tubes and Parts |
| Hinkel-Elektronik | Parts |
| HI-TEK Electronics | 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 |
| Minute Man | Parts |
| Newark Electronics | Potentiometers, Parts |
| Octave Electronics | Parts |
| Oppermann Electronic | Parts |
| Parts Connexion | Parts |
| Patuxent Communications | Parts, Transformers |
| Play Things Of Past | Tubes, Parts |
| RP Electronics | Tubes, Test Instruments , Power Supplies |
| RS - Components | Parts |
| Schuricht | Tubes, Parts |
| Shallco | Attenuators & Potentiometers, Switches |
| Soynia Electronics | Parts |
| Surplus Sales of Nebraska Index | Parts, Tubes |
| TAD - The Tube Amp Doctor | Tubes, Parts |
| The New Tube Company | Tubes, Tube Sockets, Transformers, Parts |
| Tube Amp Doctor GmbH | Tubes |
| Tube Audio Kits. Com | Tube Amplifier Kits, Parts |
| Tube Town | Tubes, Parts, Kits |
| Tubes 4 all | Tube Amplifier Kits, Parts |
| Welborne Labs | Tube Amplifier Kits, Tubes and Parts |