Sony VPLL-3024 Fixed Short Throw Lens (2.34:1 to 3.19:1) - Manual (Page 242)

Help Guide
Linear PCM Recorder
PCM-A10
You cannot control the volume of the Bluetooth audio device.
Depending on the connected Bluetooth audio device, you may not be able to control the volume of the Bluetooth
audio device from your linear PCM recorder.
Depending on the connected Bluetooth audio device, volume control in Standard Mode may not be supported.
Disconnect the Bluetooth connection and select [
Bluetooth] - [Audio Device] - [Volume Control] - [Enhanced
Mode] from the HOME menu. Then, re-establish the Bluetooth connection and control the volume once again.
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