Sony SRS-HG1 Help Manual page 158

Note
Communication may become unstable in the "Priority on sound quality" mode, depending on the setting of your BLUETOOTH device and the
ambient conditions. In this case, reset the speaker to the "Priority on stable connection" mode by performing steps
When the playback quality setting is changed by using Songpal while the speaker is turned on, the BLUETOOTH connection is terminated. In this
case, connect the BLUETOOTH device manually again. After reconnecting, the playback quality is switched.
You may also need to adjust the settings of the connected device to change the playback quality setting, such as SBC, AAC, LDAC. For details,
refer to the operating instructions supplied with the device.
Related Topic
Using the BLUETOOTH/Network standby mode
Setting the BLUETOOTH audio streaming playback quality (Codec)
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