Boss RC-300 Training Manual page 10

6. Press the REC/DUB/PLAY pedal and play the phrase.
7. When you are done, press STOP.
8. To play back, press REC/DUB/PLAY again. The green PLAY LED will
light.
9. To overdub, press REC/DUB/PLAY. The red and green LED will both be lit
to indicate overdub status.
How to Undo an Overdub
1. Press and hold the REC/DUB/PLAY pedal for two seconds
2. To redo (restore) the overdub, press and hold REC/DUB/PLAY for two
seconds again.
How to Delete a Loop
1. Hold the STOP pedal down for two seconds.
BOSS RC-300 Training Guide
Page 10