Pro Tools I/O settings
File type: Settings, options, themes or skins file
A pio file contains input and output settings for Pro Tools, Avid's digital audio workstation.
It is a settings file used by the Windows version of Pro Tools.
File type category:
Settings, options, themes or skins file
Date updated: October 29, 2026
The pio file extension is associated with Pro Tools, originally developed by Digidesign and now developed by Avid Technology.
A pio file stores the I/O configuration used by Pro Tools, such as input and output routing settings for an audio system. It is part of the program's settings and configuration data rather than an audio or project file.
The versions listed for this record include 7.4 and 8.0. The names of Pro Tools executable files include DigiTest.exe, ProTools.exe and ProToolsHD.exe.
Open a pio file from the I/O settings or I/O Setup commands in Pro Tools on Windows. The file is intended for use by Pro Tools rather than for direct viewing in a text editor.
The pio files are used for internal purposes of Pro Tools software.
A pio file is not a general-purpose format and cannot be meaningfully converted to an audio or project format.
To transfer its contents, use Pro Tools' I/O Setup options to import or export I/O settings when supported by the installed version.
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