The following article troubleshoots in the event that the GO:MIXER contains noise in the audio.
- Be sure that only the included USB cable is being used--3rd party cables are not compatible.
- Lower the volume of any unused inputs on the GO:MIXER. For example: When not connecting a microphone or a guitar or bass to the unit, turn the [GUITAR/BASS] knob and the [MIC] knob all the way counterclockwise to lower the volume level.
- If noise is heard when the phone is near the GO:MIXER, the unit might be picking up electromagnetic noise produced by the smartphone. Try changing the locations of the smartphone and the GO:MIXER.
- Be sure that a compatible phone is being used:
https://www.roland.com/us/products/gomixer/support/
(Scroll down to "SUPPORT DOCUMENTS") - Be sure that a compatible app is being used. Not all apps are warranted for full function with the GO:MIXER. Check the compatible app list on the bottom of one of the links above.
- If the noise is only heard when playing back recorded audio, test with a different app.
- If using an Android phone:
Note that the white end of the included USB cable must connect to the GO:MIXER and the black end of the USB cable must connect to the Android. - Be sure that the phone is charged and not low on battery.
- Disconnect the USB cable from both the GO:MIXER and the phone. Then reconnect both ends making sure that the USB cable is fully connected to both the GO:MIXER and the phone.
- Restart the phone.
- If available, test with a different compatible phone (using the link of one of the articles above as a reference).