※Shipping service The “Hi-Res Textbook” introduces high-resolution playback methods for listening to good sounds. It is one of the “Absolute Playback Guarantee” books that you can definitely achieve high-resolution playback if you read them. “What is Hi-Res?” It starts with, and covers everything from how to manage “tags” for sound sources and how to back them up. The photograph is a sample, so the actual product may be broken, written, etc.