An Original, Factory OEM Yamaha Equalizer for Bass Model GB-100 Service Manual, including Schematics and Parts List.

This Manual is in GOOD CONDITION, clean pages, no missing pages and contains lots of pictures and diagrams.  Please zoom into above photos to see the contents list and more details.  This Manual was published by Yamaha Corp. in 1989. The Manual in the pictures is the Manual you will receive. NO STOCK PHOTOS.  Any questions, please ask.