Cambridge Audio is a British hi-fi brand founded in 1968 and based in London. The company's debut product, the P40 integrated amplifier, is credited as the first amplifier to use a toroidal transformer — a design choice that later became an industry standard in high-end amplification. Cambridge Audio has been owned by Audio Partnership since 1994, following its acquisition by Julian Richer and James Johnson-Flint of Richer Sounds.

The brand designs amplifiers, CD players, DACs, network music streamers, speakers, and headphones. Long-running product lines include the Azur series of affordable hi-fi components, the CX range (with the CXA81 and CXA61 integrated amplifiers), the flagship Edge series, and the Evo all-in-one streaming systems. The company's Stream Magic platform, introduced with the NP30 network player in 2011, underpins much of its streaming hardware, and its Melomania line extends the brand into true-wireless earbuds.

Cambridge Audio is generally positioned as a value-focused audiophile brand rather than a pro-audio manufacturer, and its gear is more commonly found in home listening and studio monitoring contexts than on stage. The CXA81 won What Hi-Fi's Stereo Amplifier of the Year in consecutive years, and the brand has a recurring presence in hi-fi press awards across its amplifier and streaming product lines.

Cambridge Audio has 25 products cataloged on Equipboard, including Home Amplifiers, Music Streamers, and Home Theater Receivers. Their gear is featured by 1 artist, with the strongest followings in Pop, Hip Hop, and K-pop. Notable users include DJ Jino.