To restore the Acoustic Singer Pro or Acoustic Singer Live to its factory settings:
- Turn off the power.
- While holding down HARMONY TYPE, LOOPER STOP and MUTE buttons, turn the POWER switch ON.
Hold for 2 seconds until the LEDs (HIGH, UNISON, LOW, REC, PLAY and OVERDUB) light up in sequence. - The factory reset begins when HIGH, UNISON and LOW LEDs light up.
Reset is complete when all indicator LEDs light up. - Switch the POWER OFF and POWER ON again and test and check amp functionality.