ZOI Audio — Zero Output Impedance valve amplifier technology
A dedicated technical resource covering Zero Output Impedance audio amplifier design, transformer behaviour, damping, load interaction and high-performance valve amplifier development.
Articles ★ Theory ★ Reference
Articles
Technical articles, notes and external resources relating to valves, audio circuits and historic reference material.
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Reference articles coming soon
This section will later include curated notes on bases, pinouts, UK and American substitutes, service types, manufacturer references and useful historical documents.