Reference site for all electronics applications. Tutorials on power supplies, testing, audio, microphones, amplifiers, motor control, basic electronics, lasers, radios, digital electronics, and robotics.
Active forum for exchange of tube audio ideas and technology.
An essay presented to the AES on the much-debated topic of the tonality of different amplifier technology.
Extensive list of links and topics on vacuum tube audio applications, projects, theory, and design. Boasts a "world's largest" tube audio links section.
Analysis of vacuum tube theory and design. Information on tubes, test equipment, the audio of capacitors, loadlines, power amps, inverted triodes, and starved filaments.
Analysis of single ended triode (SET) tube amplifiers. Extended treatment of output impedance.
Anthology of do-it-yourself instruction for designing and building tube-based instruments.
Links to a host of tube audio sites including sites on musical instruments, theory and design, and fabrication.
Dedicated to the history of Altec Lansing speakers.
Tube preamps, power amps and loudspeakers.
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