The long awaited follow up to "Audio Reality," this new book "Tubes and Circuits" is more in-depth and loaded with tons of useful and specific information. For anyone interested in electronics in general and tubes in particular. All presented in a manner in which even "non technical types" can follow. Although written for anyone, this is a "must-have" edition for any Do-It-Yourself (DIY) audio enthusiast, especially "tube-o-philes" or "tube-o-holics" if for no other reason than the included projects alone. Some of the projects presented are world class, tube-based, ingenious OTL (Output-Transformer-Less) amplifiers with printed curcuits and parts lists included. If you're into tube based audio this is the only book you'll ever need and one you'll definately want in your pile/stack/stash of literature. I already consider it reference material. Highly recommended!