E4x4 Pre The computer does not recognize this unit

E4x4 Pre Cannot play or record

E4x4 Pre The sound of the device connected to the input jack is distorted

E4x4 Pre Recorded audio is too loud, too quiet or silent

E4x4 Pre Playback sound cannot be heard

E4x4 Pre No power

E2x2 OTG Cannot play or record

E2x2 OTG The sound of the device connected to the input jack is distorted

E2x2 OTG Recorded audio is too loud, too quiet or silent

E2x2 OTG Playback sound cannot be heard

E2x2 OTG The mobile phone does not recognize this unit

E2x2 OTG No power

E2x2 Cannot play or record

E2x2 The sound of the device connected to the input jack is distorted

E2x2 Recorded audio is too loud, too quiet or silent

E2x2 Playback sound cannot be heard

E2x2 No power

E1x2 OTG Cannot play or record

E1x2 OTG The sound of the device connected to the input jack is distorted

E1x2 OTG Recorded audio is too loud, too quiet or silent