※Shipping service. This is the third installment in the “Vacuum Tube Audio” series, which continues from “The True Story of Vacuum Tube and Audio by Shin Ohashi” and “The Mysteries of Using Vacuum Tubes and Audio by Shin Ohashi”! If “True Stories” is the basic edition and “The Mysteries of Utilization” is the practical edition, then this book should be positioned as an exploration edition. The content of the popular music bird program “Vacuum Tube Wonderland” is restructured, and navigator Shin Ohashi invites readers to the deep world of vacuum tube amplifiers and audio. The photograph is a sample, so the actual product may be broken, or there may be markings etc.