Besides Telefunken's own CN 750 High Com compander box and Nakamichi's High-Com II unit, other companies also offered external High Com compander boxes such as the Aiwa HR-7 and HR-50 or the Rotel RN-500 and RN-1000.
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Nakamichi, one of the more than 20 licensees of the High Com system, insisted on using a sliding-band compander, so High Com was further developed into the two-band High Com II and three-band High Com III sliding-band 2:1:2 systems by Werner Scholz and Ernst F.
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A low-cost implementation of the Telefunken High Com system as external compander box became available as HobbyCom, promoted for do-it-yourself assembly in the popular WDR TV series Hobbythek format by Jean Pütz in 1980.
high school | High Court | High Court of Justice | High School Musical | Ultra high frequency | high school football | High Court of Australia | High-definition television | High Commissioner | High Street | High King of Ireland | High Wycombe | High School Musical 2 | high-definition television | United Nations High Commissioner for Refugees | High Middle Ages | High School | Twelve O'Clock High | Middle High German | Madras High Court | High Street, Oxford | High Sheriff of Cheshire | High Museum of Art | High-definition video | High Court of Justiciary | High School Musical 3: Senior Year | High school football | High Point, North Carolina | High frequency | Fast Times at Ridgemont High |
A similar system named High Com FM was tested in Germany between July 1979 and December 1981 by IRT.