- Please check if the transmitter was mute.
- Use a headset to connect PHONES port on RX to check whether the audio is normal, if normal, the reason of problem is that the connection cable broken.
- Please connect Lark 150 to laptop via a TRRS to TRS cable, the problem is on TRRS to Type-C/ lightning cable if the lark 150 works well with the laptop, otherwise, please replace the TRRS to TRS cable.