Pro Tools is a hardware and Software based Audio program which is used for the creation and production of music.
With Pro Tools you can.
Dependent on the users needs Pro Tools can be either software or hardware based or a mixture of both.
The file extension used by Pro Tools is PTF, this extension has been used since Pro Tools 7 and later versions, these files are cross platform so that you can work on them on Mac OS X or a Windows personal computer.
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How to open .ptf files?
Software to open .ptf files
What are .ptf files