Clocks Made From Vinyl Records

The "warmer" sound of analog records is generally believed on both sides of the argument to be an artifact of harmonic distortion and signal compression. This phenomenon of a preference for the sound of a beloved lower-fidelity technology is not new; a 1963 review of RCA Dynagroove recordings notes that "some listeners object to the ultra-smooth sound as ... sterile ... such distortion-forming sounds as those produced by loud brasses are eliminated at the expense of fidelity. They prefer for a climactic fortissimo to blast their machines ..."
The theory that vinyl records can audibly represent lower frequencies that compact discs cannot (making the recording sound "warmer") is disputed by some and accepted by others. According to Red Book specifications, the compact disc has a frequency response up to 22,050 Hz. The average human auditory system is sensitive to frequencies from 20 Hz to a maximum of around 20,000 Hz. The upper and lower frequency limits of human hearing vary per person.