The amplifier was one side of the desk, the amplifier was sold separate from the desk, the desk was optional. For its time, 1956, it had TV suppression, would function on 115 or 230 volts, the amplifier was 400 lbs and the optional desk was another 155 lbs… it sold for 1595.00, desk sold for 132.00. The desk came in 2 models depending on which side of the desk you wanted the amp on…
Below is the EF Johnson Catalog and on Page’s 14 and 15 you will find the Kilowatt Desk…
EF_Johnson_catalog_957