Many years ago I published this article abt digging for ancient audio ephemera in Buenos Aires. Reader N. Dinapoli Farina uncovered some related materials and has shared them with us here. I believe that the magazine may have been called “Radio Chassis Television” and the scans below are all from the late 1950s. Click on the images for hi-res. Enjoy!
Above: Williamson style amp and power supply.
Fifteen-watt “Alta Fidelidad” amplifier.