This item is in beautiful condition, having only been viewed a few times after being purchased new. It has been stored in a smoke-free environment. A specialized book by Akima Tsuneo, stating that over 90% of a guitar amp's tone is determined by the amp itself. - Title: The Truth About Guitar Amps - Author: Tsuneo Akima - ISBN: 978-4845643361 - Price: 1,800 yen - Year of Publication: 2019 - Publisher: Rittor Music