Hello Anonymous
I haven't tried that myself, I don't have any active speakers.
What I have found on the internet is the following:
Can I adjust the volume when I use the line-out?
The line-out signal level is usually fixed and is not affected by the volume control on your device. To adjust the volume when using the line-out, you must adjust the volume on the connected speakers, amplifiers or another device in the audio chain.
Greetings R. Schmid