Hi-Fi

What?

High fidelity (often shortened to hi-fi or hifi) is a term used by listeners, audiophiles and home audio enthusiasts to refer to high-quality reproduction of sound. This is in contrast to the lower quality sound produced by inexpensive audio equipment, or the inferior quality of sound reproduction that can be heard in recordings made until the late 1940s.

Ideally, high-fidelity equipment has inaudible noise and distortion, and a flat (neutral, uncoloured) frequency response within the human hearing range.