This book enables those with a limited knowledge of the field to understand both the theory and practice of valve audio amplifier design, such that they can analyse and modify circuits, and build or restore an amplifier. Design principles and construction techniques are provided so readers can devise and build from scratch, designs that actually work. This is a completely up-to-date practical guide for people working with valves. Morgan Jones takes the reader through each step in the process of design, starting with a brief review of electronic fundamentals relevant to valve amplifiers, simple stages, compound stages, linking stages together, and finally, complete designs. Practical aspects, including safety, are addressed throughout. The second edition of this popular book builds on its main strength - exploring and illustrating theory with practical applications. Numerous new sections include: output transformer problems; shunt regulators, phase splitter analysis; and hum loops. In addition, three major new constructional projects are included: a low-noise single-ended LP stage; and a pair of high voltage amplifiers for driving electrostatic transducers directly - one for headphones, one for loudspeakers.

A unique book which applies modern audio design principles to classic valve technology. The definitive modern guide to valve amps for home and professional audio applications. Revised and expanded second edition.