Electro-Voice INC.
Named as the FAA publishes it on its approvals.
Approved to make 3 classes of equipment. FAA spelling: Electro-Voice Inc..
Equipment approvals technical standard order authorisations
TSO-C58A · Aircraft Microphones (Except Carbon) · * · other and general
TSO-C57 · Headsets And Speakers · *, *, * · other and general
TSO-C58 · Aircraft Microphones (For Air Carrier Aircraft) · *, *, * · other and general
Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.