RD-300SX: Transposing the Keyboard
You can raise or lower the pitch of your playing without having to change your keyboard performance:
1. Hold down TRANSPOSE to display the current transpose value.
2. While holding down the TRANSPOSE button, use the DEC / INC buttons to set the desired transposition amount.
NOTE: You can also press any key thats the desired number of semitone steps below or above the Middle C key to set the transpose amount.
3. Release the TRANSPOSE button.
4. To turn off transposition, press TRANSPOSE again so its not lit.