Knowledge Base


Pro Tools i/o limitations

Technical Support receives questions every so often about Pro Tools i/o issues and/or limitations.  After some research we’ve determined that:

  • A Pro Tools 9.x, 10.x, and 11.x installation (Native) is limited to 32 i/o Channels (maximum).
  • Avid only supports the i/o on a single interface/driver.
  • There are situations where PT users have over 32 channels of i/o available and Pro Tools will not launch until the inputs and outputs in excess of 32 are disabled.
  • On our StudioLive AI series Consoles and Rackmounts, including Cascaded systems, with Digital Returns that are firmware mapped to channel 33/34 cannot be used for playback.  The return must be placed on input channels 32 and below.  In all Series III consoles this applies except for the StudioLive 16R mixers.
  • i/o must be recognized by the system as being a single interface (aggregate devices in Macs “may” work, but this is not a supported method)

The following link will explain some differences between versions of Pro Tools:

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