※Shipping service. Written by Kimura Tetsu/A book that thoroughly explains everything from the mechanism to manufacturing of vacuum tube amplifiers in a thorough and detailed manner that satisfies everyone from beginners to enthusiasts. A must-have and introductory book for those who want to try making their own vacuum tube amplifier. 2011.11.5 The first edition is published. The photograph is a sample, so the actual product may be broken, or there may be markings etc.