.EFQ File

.efq is Ensoniq SQ1/SQ2/KS-32 File

Key Features: .EFQ File Extension

Sound format used by the SQ1, SQ2, and KS-32 synthesizers, a line of digital workstation keyboards released by Ensoniq in the early 1990s

Associate the EFQ file extension with the correct application. On :
Windows: Right click on any EFQ file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.EFQ files". Mac: Right click (or Ctrl-click) the EFQ 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 .EFQ is Ensoniq SQ1/SQ2/KS-32 File. Because only the current version supports the latest EFQ file format. Search, therefore, e.g. on the N/A manufacturer website after an available .EFQ is Ensoniq SQ1/SQ2/KS-32 File update.
To make sure that your EFQ file is not corrupted or virus-infected, get the file again and scan it with antivirus software.