I have just bought a used Beosound 4 music centre together with two Beolab 4 speakers.
The Beosound 4 appears to work fine, listening to the radio and the cd player through a headset connected to the headset output on the Beosound 4.
When I connected the headset to the Aux Out points on the Beosound 4 I could not control the volume using either the handset or the Beosound 4.
I have yet to connect the Beolab 4 speakers to the Beosound 4. From reading around, it seems that the Beolab 4 speakers are connected to the Aux Out points on the Beosound 4. If that is so then the question of volume control arises.
Your advice in this matter would be much appreciated.