The KEF Q900 is a floor-standing loudspeaker that is part of KEF's Q Series. It is designed to deliver high-quality audio performance with a distinctive combination of innovative technologies and aesthetic appeal. The Q900 features a 25mm aluminum dome tweeter for clear and detailed high frequencies, paired with dual 9-inch bass drivers which provide deep and powerful bass response. The speaker incorporates KEF's unique Uni-Q driver array, where the tweeter is positioned in the acoustic center of the bass driver, allowing for a more cohesive sound and wider sweet spot. The Q900 is constructed with a rigid cabinet to minimize unwanted vibrations, and its elegant design is available in several finishes, making it suitable for a variety of interior styles. Additionally, it offers bi-wiring and bi-amping capabilities for advanced audio configurations. With a frequency response that typically ranges from 38Hz to 28kHz, and a sensitivity rating of around 91dB, the Q900 is able to reproduce a wide dynamic range and intricate details within different types of music.