Be sure to add me to your favorites list Original Yamaha SPX 990 Rack Mount Digital Effects Operation Owner's / User's / Operating Manual Book, Made in Japan. This is an original User's / Owner's / Operation Manual for the Yamaha rack mounted Multi Effect processor, model SPX990 in very good condition. It is complete and very helpful if you have this sophisticated digital effects rack mounted module. The covers have marks, finger indentations but the pages are much better, overall very good. There are English, Spanish, and German sections in this book. Original Yamaha document from 1994, made in Japan! This is a manual or document, this is NOT a piece of equipment or instrument. If you have any questions, I'm always happy to answer them. Thanks for looking, Check out my Store!