Press and hold Tweak while pressing the A button to get into the System menu.

Press + several times until you reach the lowest line. Turn the encoder to the right of the display a couple of clicks until you can see “FACTORY SOUNDSET? [Y]” Press Yes. This plays the factory sound set back in.

Adjust the other settings in the menu to the following values:

MIDI CHANNEL: Omni

Master Tuning: 440 Hz

Transpose: +00

Pitch Bend Range: 02

Control X: 002

Tx Edits: Off

Tx Program Change: On

TX Aftertouch: On

TX Keys/Controls: On

Local Control: On

Device ID: 000

Line In: Off

Input Gain: +18dB

Input Low-cut : Off

Mic Power: On

Freeze Threshold: 002