DTX400 Electronic Drums Editing Pad Volumes
1) While holding the [KIT] button, press the [SONG] button to activate Menu Mode..
2).Press number button [2] to select the Kit Settings parameter group.
3) Press number button [2] to select the Pad Volume parameter.
4).Strike a pad to select it.
5).Enter a new volume using number buttons [1] to [10 ]