The Bose 901 IV is a vintage loudspeaker model manufactured by Bose Corporation. It was released in the 1980s as an improvement over the previous versions of the Bose 901 series. The speaker system features nine full-range drivers arranged in a unique configuration, with eight drivers facing towards the wall and one driver facing forward. This design is intended to create a spacious, room-filling soundstage. The Bose 901 IV was known for its distinctive sound signature and its requirement for a separate equalizer to achieve optimal performance. It had a reputation for delivering clear and detailed audio reproduction. However, it is important to note that opinions on the sound quality of the Bose 901 IV vary among audiophiles.
