If "DUAL CUBE Audio" does not appear on the mobile device's Bluetooth settings screen, check the following points.
Bluetooth is disabled on the BT-DUAL (the pairing indicator is unlit)
Press and hold the BT-DUAL pairing button for at least three seconds. Once the pairing indicator begins blinking rapidly, complete the pairing on the mobile device. When the mobile device detects the unit, "DUAL CUBE Audio" appears.
The device is operating in power-saving mode due to a low battery level
Check the remaining battery power on the mobile device. When using the DUAL CUBE BASS LX Editor, do not tap "DUAL CUBE MIDI" on the mobile device's Bluetooth settings screen.
For connection details, refer to "Connecting the DUAL CUBE BASS LX Editor iOS App to the DUAL CUBE BASS LX" or "Connecting the DUAL CUBE BASS LX Editor Android App to the DUAL CUBE BASS LX".