The Bose 901 III is a speaker system produced by Bose Corporation. It is a part of the Bose 901 series, which is known for its unique design utilizing nine full-range drivers arranged in a specific pattern to create a lifelike and spacious soundstage. The 901 III model was released as an upgrade from the previous versions and featured improved drivers and an updated equalizer to enhance the performance. It is compatible with various audio sources and is designed to deliver exceptional sound quality and accuracy.