Low sound quality of the device connected via Bluetooth connection.
- Turn down the volume of the playback device if it is too loud.
- When playing music, if the headset and the transmitting Bluetooth device are connected via an HFP or HSP Bluetooth connection, switch the Bluetooth connection to A2DP by operating the connected device.
- If the headset connects to the previously connected Bluetooth device, the headset may only establish the HFP/HSP Bluetooth connection when it is turned on. Use the connected device to connect via an A2DP Bluetooth connection.
