All current Roland pads are compatible with the TD-50. For optimum trigger results, it's best to match the Trigger Type with the type of pad being used. Doing so "tells" the TD-50 what type of pad is connected to the input and automatically optimizes the sensitivity settings for that pad.
By default, the pads are already assigned correctly for the TD-50K and TD-50KV sets, however if you're adding an additional pad to the kit, or changing one of the pads out for a different model, follow these steps to set the trigger type for it:
1. Press the TRIGGER button.
2. Press F1(BANK).
3. Hit the pad.
4. Turn the dial to choose the appropriate Trigger Type. For example, if you're connecting a PD-105 pad, choose "PD105."
5. Repeat the process for any other pads as needed.
6. Press EXIT when you're finished. The new settings are saved automatically.