.EFA File

.efa is Ensoniq ASR File

Key Features: .EFA File Extension

Audio format used by the Ensoniq Advanced Sampling Recorder (ASR), a digital music production studio released by Ensoniq in the early 1990s

Associate the EFA file extension with the correct application. On :
Windows: Right click on any EFA file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.EFA files". Mac: Right click (or Ctrl-click) the EFA file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
Update your software that should actually open .EFA is Ensoniq ASR File. Because only the current version supports the latest EFA file format. Search, therefore, e.g. on the N/A manufacturer website after an available .EFA is Ensoniq ASR File update.
To make sure that your EFA file is not corrupted or virus-infected, get the file again and scan it with antivirus software.