Brings fresh information to help guitarists understand everything about what makes their amps tick and how to sound better than ever. Central to the book's success is the way it walks musicians through the significance of each crucial circuit stage and component of a number of classic and modern tube amp designs, helping guitarists get the most from the amps they already own or choose new amps best suited to their needs. Reveals many of the tips and tricks used by today's top designers and builders, and debunks the hype used by the marketing departments at large manufacturers. This updated and expanded edition adds further knowledge to the foundation, ensuring it continues as the most thorough and authoritative publication on the subject. 295 pp.