Back in the late 1950s, Harman Kardon (which was then an American company) launched the Citation I and Citation II. A feature-laden preamplifier and valve-driven power amplifier respectively, they established the Harman Kardon brand as a force to be reckoned with – at least, in what passed for home entertainment in those days.
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https://www.techradar.com/reviews/harman-kardon-citation-towers-wireless-floor-standing-speakers