Beginners guide offers an introduction to DIY hi-fi. Includes articles on building, modifying and buying components.

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

The site for audiophiles and/or fanatics.

Includes datasheets and reference articles on audio and headphone amplifiers, preamplifiers, head and phono amps.

Showcases the author's build of tube amplifiers, pre-amplifiers and restorations of tube radios.

Information on HiFi electrostatic loudspeakers. Contains information on how to get started and build a basic panel.

Passive 2-way crossover spreadsheet design tool. Models allow complex speaker impedance, acoustic target shapes, series or parallel designs, and impedance compensation circuits.

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.

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.

Self-built guitar tub amplifiers. Showcases design and stories beyond tube amp building, effects pedal building, and related music projects.