This vintage manual is a must-have for any Bose enthusiast. It is the original service supplement for the BOSE AM900P Powered Acoustimass 900 Speaker System. Made in the United States, it contains valuable information on how to maintain and repair this classic audio system. The manual includes detailed diagrams and instructions on how to troubleshoot and fix any issues that may arise with the speaker system. It is a rare find for collectors and audiophiles alike. Don't miss out on the opportunity to own this piece of Bose history.