Hi,
yes, it works. The Avant has 2 seperate amplifiers, using a powerlink interface... or at least compatible with powerlink. You need only a 60 Watt power supply.
The plastic box with the loudspeakers sounds nice, but looks awfull. The speakers are compatible with Beolab 2500.
If you build a box in a wall, behind the sofa or under the desk, they sound great. But they should be installed invisible.
Martin