“Self provides solid, well-explained technical information throughout the book, all gained from years of experience and a thorough understanding of the entire topic (…) His book exudes skilful engineering on every page, and I found it a very refreshing, enjoyable, and inspirational read (…) if you have the slightest interest in audio circuit design this book has to be considered an essential reference. Very highly recommended”.

—Hugh Robjohns, Sound on Sound Magazine

“This book presents a large body of knowledge and countless insider-tips from an award-winning commercial audio designer (…) Douglas Self dumps a lifetime’s worth of thoroughly-tested audio circuit knowledge into one biblical tome”.

—Joseph Lemmer, Tape Op