| Allied Electronics | Parts |
| Amptek | Tube Guitar Amplifiers, Tubes, Books, Parts |
| CE Distribution LLC Tube Accessories | Parts, Tubes |
| DHTsound.com | Japanese Portal, Parts, Tube Amplifier Kits, tubes, forums, links |
| Digitex | Tube Amplifier Kits, Tubes, Speakers, Parts |
| DIYCable.com | Cables, Parts |
| Esco | Tubes, Parts |
| Farnell | Parts, Tools |
| Futurlec | Parts |
| Handmade Electronics | Tubes and Parts |
| Hinkel-Elektronik | Parts |
| HI-TEK Electronics | Parts |
| Jameco Electronics Electronic Components | Parts |
| Ken's Electronics | Tubes, Parts |
| Lampy Elektro-nowe | Transformers, Schematics |
| Leeds Electronics | Tubes and Parts |
| Main Electronics Receiving Tube Page | Tubes, Parts |
| Maplin Electronics | Parts |
| Metco Electronics | Parts |
| Minute Man | Parts |
| Noble Potentiometers | Attenuators, Potentiometers |
| Nutshell High Fidelity | Speakers, DIY Tube Amplifers, Potentimeters, VSAC |
| Octave Electronics | Parts |
| Oh's Audio | Tube Amplifiers, Tube Amplifiers Kits, Forum, Parts |
| Parts Connexion | Parts |
| Pispola Patrizia | Componenti elettronici |
| Play Things Of Past | Tubes, Parts |
| Radio Daze | Tubes, Parts, Restoration |
| Reinhöfer Electronic | Tube Amplifier Kits, Tubes, Parts |
| RF Parts Company™ Amateur Radio Catalog | Tubes, Parts |
| Richardson Electronics | Tubes and Parts, Amperex Bugle Boy |
| RS - Components | Parts |
| Schuro - Elektronik | Parts |
| Surplus Sales of Nebraska Index | Parts, Tubes |
| TAD - The Tube Amp Doctor | Tubes, Parts |
| THEL Audio Engineering | Tube Amplifier Kits, Tubes and DIY Parts |
| THL Audio | Parts |
| Torres Amps | Tube Guitar Amplifiers, Kits, Parts, Tubes |
| Triode Electronics Online Catalog | Tubes, Parts, Tube Data, Schematics, Links |
| 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 |
| Van Weelden | Tubes, Parts |
| Vatronics | Capacitors, Potentimeters |
| Webtronics | Circuit Specialists - Data Acquisition - Industrial Computers - Test Equipment - Components & Supplies... |
| Welborne Labs | Tube Amplifier Kits, Tubes and Parts |