Qudelix-5K

Blue LED Behavior

The Blue LED on the Qudelix-5K blinks whenever the device receives a command from the connected source device.

When Absolute Volume Control is supported, adjusting the volume on the source device (e.g., a smartphone) sends a volume command to the 5K. Upon receiving this command, the 5K processes it and briefly blinks the Blue LED to indicate active communication between the source device and the 5K.

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When Absolute Volume Is Not Supported

If the source device does not send volume commands to the sink device (the 5K), the 5K does not receive any volume control information. In this case, the Blue LED will not blink, since no command is being transmitted from the source.

When Absolute Volume is not supported, the source device controls the playback volume by scaling the digital audio signal before transmission. To achieve the best sound quality, set the source device’s volume to the maximum level to preserve the original bit resolution of the digital signal.