| AudioClub: The site for audiophiles and/or fanatics. |
| Boozhound Laboratories: DIY site specializing in tube audio, vintage style guitar amps, mad science and all around DIY hooliganism. |
| Chris VenHaus Homepage: DIY resource for Audiophiles. Includes recipes for Cat5 speaker cable, fine silver interconnects, and power cords. |
| CoolTune Audio Projects: Marco Rutz shares his experiences and projects in design, acoustics and recording. Personal observations, current and past projects, photo gallery, and high-end systems are showcased. |
| Decibel Dungeon: Beginners guide offers an introduction to DIY hi-fi. Includes articles on building, modifying and buying components. |
| DIY Hifi, Audio and ELectronics: Includes datasheets and reference articles on audio and headphone amplifiers, preamplifiers, head and phono amps. |
| diyAudio.com: Web community dedicated to DIY audio projects and discussion. |
| Elliott Sound Products - The Audio Pages: Information for audio DIY hobbyists. Articles, construction projects, links, sources. |
| Gary's Vacuum Tube Page: Vacuum tubes for antique radios and tube audio gear. |
| Guitar Electronics Projects: Self-built guitar tub amplifiers. Showcases design and stories beyond tube amp building, effects pedal building, and related music projects. |
| Klaus Boening's Tube and Audio Homepage: Describes a 50 watt tube power amplifier for high end applications, including schematics and description of the circuitry. |
| Leon's Audio Page: Showcases the author's build of tube amplifiers, pre-amplifiers and restorations of tube radios. |
| Lighthouse Electric - Hobby Electronics: Projects and tutorials. Switched Mode Power Supplies, Vacuum tube and solid state audio amps. |
| Matthew Anker's Electrostatic Loudspeaker Page: Information on HiFi electrostatic loudspeakers. Contains information on how to get started and build a basic panel. |
| nMine.com Developments: Multi-amplification DIY Project.: Description and photos of multi-amp PCB with three integrated amplifiers each PCB and 24 dB/Octave Linkwitz-Riley Electronic filters. Configurable as a bi-amp or tri-amp. |
| Pass Do-It-Yourself: Projects by Nelson Pass including amplifiers, preamps and loudspeakers. Site offers information on circuit boards, FAQs and how to articles. |
| PCB-Design: Kristijan Kljucaric offers his blue-colored PC board (PCB) designs for high-end DIY projects supported by Pass Labs, including amplifiers, pre-amps, crossovers, and power supplies. |
| Pete Millett's DIY Audio Pages: Depository for a variety of audio designs and projects, especially tubular amplifiers. Site offers photo gallery and details on the author's projects, downloadable PDF documents, and technical diagrams. |
| Pjay's DIY Speaker Building Page: Information on speaker building: how to build speakers, find drivers and a listing of projects. |
| Promitheus DIY Audio site: Includes projects and articles about amplifiers, preamplifiers, speakers and cables. |
| RJM Audio Cable: A resource for the design and construction of speaker cables, interconnects, and digital cable from inexpensive and commonly available wire and cable products. |
| Tube Amplifiers by Giovanni Schiavon: Offers a range of drawings, photos of components and complete builds, downloadable manuals, and descriptions to build vacuum tube amplifiers. |
| Wade's Audio And Tube Page: Discussion of vacuum tube audio amplifiers and high fidelity equipment with photos and schematic diagrams. |
| XO - An Excel Crossover Design Tool: Passive 2-way crossover spreadsheet design tool. Models allow complex speaker impedance, acoustic target shapes, series or parallel designs, and impedance compensation circuits. |
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