TC Electronic VSS3 TDM - Manual (Page 20)

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20 / VSS3
To convert your preset file to VSS3 presets, simply select the name of the preset file.
The conversion will only take a few seconds and only needs to be done once.
When the conversion is done, all presets from your preset file will be available in a
subfolder that has the same name as the preset file had. The presets will show up in
the same bank structure as on the System 6000, and presets that are not based on
the VSS3 algorithm will not be converted.
The preset file will disappear from the Convert section of the file menu.
Compare settings with A/B Mem.
With the A/B compare function you can easily compare different parameter settings
when you work with your music.
You have two buttons: the "Mem" and the "A/B" button.