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Most recent information
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The most recent versions of the software/firmware for this unit are as follows.

Windows
    Software     :V4.00 (Previously V1.12. Updated at this time)
    Firmware     :V1.00 (Previously V1.00. Not Updated at this time)

Mac OS
    Software     :V1.10 (Previously V1.00. Not Updated at this time)
    Firmware     :V1.00 (Previously V1.00. Not Updated at this time)

We request that you always use the latest software/firmware version for this unit.
For information about the latest software/firmware, check the TEAC Global Site (http://teac-global.com/)
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<< New functions >>
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S/W Additions in version 4.00  (2020.01.31)

 -Buffer Size can now be set from 4 samples. (Windows only)
 -Scaling to a suitable size now occurs with 4K and other high resolution displays. 
 -When connected by USB, a menu item has been added in the sound settings to turn this unit off as the 'default device'.
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S/W Additions in version 1.10  (2018.01.23)

 -Now, when a US-1x2 is connected to a Windows computer by USB, the sound device settings will be made automatically 
  and the Settings Panel will launch.
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<< Maintenance items >>
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S/W Fix in version 4.00  (2020.01.31)

 -Operation stability has been improved.
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S/W Fix in version 1.12  (2019.02.25)

 -Bugs with Windows 10 October update (Ver. 1809) such as glitch noises and audio tracks unable to be played have been 
  fixed. 
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S/W Fix in version 1.11  (2018.02.07)

 -In some cases, the headphone monitor is not operating even though the meter display of the Windows sound device dialog 
  window show it to be operating. This has been fixed.
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S/W Fix in version 1.10  (2018.01.23)

 -Operation stability has been improved.
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