Tech HiFi was an audio retailer founded by MIT students in Cambridge, Massachusetts in the 1960s. They grew to more than 80 stores and still have a presence today in Hanson, MA. Fun fact: co-founder John Strohbeen later went on to found Ohm Acoustics Corporation.
Behold the Audio Research D-150, one of the most legendary amplifiers ever made. Introduced in 1975 at $2,685, it delivered 150 watts per channel courtesy of four pairs of 6550 tubes, and sounded superb. An estimated 150 were built. Courtesy of SkyFi Audio.com.
And here's a tube amp you can hold in one hand, a "lowest cost stereo amplifier" kit from the September, 1959 issue of Electronics World.
Careful speaker placement? Room treatment? A fine recording? Who needed any of that for sonic spaciousness when you had the Philco REVERBaphonic Sound System? "A musical miracle you must hear!"
You want meters? You got 'em, courtesy of this Sansui QRX-5500 quadraphonic receiver. Introduced in 1973, it offered 22 watts per channel x 4 (into 8 ohms), and both discrete and derived quadraphonic sound. Courtesy of Wikimedia Commons/Davealexander.
Header image courtesy of Pexels.com/Nikita Korchagin.
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