High fidelity (often shortened to Hi-Fi or HiFi) is the high-quality reproduction of sound. It is popular with audiophiles and home audio enthusiasts. Ideally, high-fidelity equipment has inaudible noise and distortion, and a flat (neutral, uncolored) frequency response within the human hearing range.

In general, a high bitrate means high-quality audio, provided the sample rate and bit depth are also high. More information, in a very general sense, means better sound quality.

A deeper listening experience. Hi-fi audio can enhance the emotional experience of hearing a piece of music; in some cases, it's even like hearing it for the first time.

Hi-Fi reproduces sounds with minimal distortion and background noise and represents an accurate frequency response. Prior to Hi-Fi, sound recordings were often poor in quality, with distorted and unpredictable sound - and certainly less of a true representation of the original.