AUDIO, USA
-THE AUTHORITATIVE MAGAZINE ABOUT HIGH-FIDELITY, was a periodical published from 1947 to 2000, and was America's longest-running audio magazine. It published reviews of audio products and audio technology as well as informational articles on topics such as acoustics, psychoacoustics and the art of listening. AUDIO claimed to be the successor of RADIO magazine which was established in 1917.
Below: March 1974, #95. Thank you to Eric Galzi for the improved image.