EFC

Technics Sx KN 6000 keyboard effect memory data
File type: Various data file
Files with efc file extension are associated with Panasoc Techni Series keyboards. They contained music effects.
Found 4 different file type records with the same efc filename suffix.
What is efc file?
File type category:
Various data file
Date updated: March 23, 2018
The efc file extension is used by Panasonic Technic series Sx KN 6000 keyboards for files that contain effect memory data. Most likely no longer used audio format without support from Technics.
How to open efc file?
It is not possible to open files with *.efc extension.
How to convert efc file?
Probably cannot be converted to anything else.
ANNO 2070 effect data
File type category:
Game file
Date updated: August 23, 2019
The efc file extension is related to the ANNO 2070, a real-time strategic, city building and economical simulation video game for Microsoft Windows operating system.
The efc file stores data used to visualize effects in the game.
The efc files are stored in RDA game data archives.
How to open efc file?
Probably not meant to be accessed by the user.
How to convert efc file?
Probably cannot be converted to anything else.
Suggested software to open efc file:
Associated software actions with the efc file
Software applications that handle other tasks involving efc files:
ANNO 2070 (Microsoft Windows)
eFiler configuration
File type category:
Configuration file
Date updated: November 9, 2016
Files with efc file extension are related to the eFiler, a plug-in for Microsoft Outlook e-mail client, which allows users to archive e-mail messages.
The efc file contains configuration for eFiler.
Suggested software to open efc file:
Associated software actions with the efc file
Software apps that manage settings for efc files:
eFiler (Microsoft Windows)
FAIRCOPY encrypted fair copy
File type category:
Encoded and encrypted file
Date updated: February 26, 2019
The efc file extension seems to also have been used for some sort of encrypted file generated by program called FAIRCOPY.
It seems to be old and discontinued program and even the developers website is defunct now.