It's possible to adjust the volume level for each pad in a kit of the TD-4KP. Here's how.
1. Choose a desired kit to edit.
2. Press the MENU button.
3. Press SEL down to select "2 MIXER.".
4. Press OK.
5. Hit a pad that you'd like to change the volume of.
6. Turn the +/- dial to adjust the volume.
7. Repeat Steps 5 and 6 for any remaining pads if desired.
8. When you're finished, press MENU. The new setting is saved in the kit automatically