Definitions for "High fidelity"
1) A kind of sound-reproducing system whose realism of reproduction is judged to be better than average. Stereo reproduction can be high-fidelity or otherwise. 2) The pursuit of perfection in sound reproduction, as a hobby or a religion.
Sound reproduction equipment that reproduces sound as near to the original sound as possible also see: AKA: Antonym: Source: http://www.twysted-pair.com/dictionary.htm
An amplifying system that faithfully reproduces virtually a full audio-frequency spectrum with negligible distortion (approximately 20 cps to 20,000 cps).
a sharp and satisfying romantic comedy about the difficulty of commitment