TC Electronic VSS3 TDM - Manual (Page 22)

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22 / VSS3
Now, if you try to browse through a couple of presets, using the up and down arrows
on the right side of the preset name, you will see that most of the presets have the
Dry Level set to "Off". In other words, the Dry Level goes to "Off" all the time - which
is quite annoying.
And here comes the Parameter Lock. Simply press the small lock in the Dry Level
parameter field, and the Dry Level will stay at the value that you've set it to - no mat-
ter what is saved with the preset you choose.