Marshall Leach (RIP) was a Professor of Electrical Engineering at Georgia Tech University best known for his Leach Amplifier which he used as a practical vehicle for teaching his students the finer details of analog design, feedback, thermal compensation and power electronics. Hundreds of Leach Amplifiers were built over the years by his students, and possibly thousands by DIY builders across the world who came to love not only its fast, open sound, but the elegant simplicity of its design, its legendary ruggedness and the fact that it suffered from absolutely no audible ‘plops’ when powering it up or down.
The tutorial below offers a uniquely practical and accessible insight into amplifier design fundamentals from an acknowledged master of the art.
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