Features the build and review of an AudioNote PQ Signature Kit1 300B SE valve amplifier with TRANS300 c-core output transformers. Also includes general reviews, articles about build techniques, etc.

British-based informal group focused on advancing do-it-yourself audio reproduction features membership details, overview of current and past projects, a newsletter, articles on systems, and links.

Includes projects and articles about amplifiers, preamplifiers, speakers and cables.

DIY resource for Audiophiles. Includes recipes for Cat5 speaker cable, fine silver interconnects, and power cords.

The Audio Pages

Projects by Nelson Pass including amplifiers, preamps and loudspeakers. Site offers information on circuit boards, FAQs and how to articles.

Offers a range of drawings, photos of components and complete builds, downloadable manuals, and descriptions to build vacuum tube amplifiers.

Beginners Guide to all matters relating to DIY hi-fi. Everything clearly explained with text and pictures.

Hobby Electronics

The information needed to build a light-sensitive electronic noisemaker.

DIY site specializing in tube audio, vintage style guitar amps, mad science and all around DIY hooliganism.

Web community dedicated to DIY audio projects and discussion.

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.

A resource for the design and construction of speaker cables, interconnects, and digital cable from inexpensive and commonly available wire and cable products.

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.