I have a pair of Beolab 3000 amplifiers that work well.  I also have the brackets to mount them to Beovox 3000 or Beovox 5000 speakers.  I believe this is the same amplifier that was used for both.  They are US 110V.  The displays are perfect and they sound good.  You can also use them to power any passive speaker with your Bang and Olufsen system, I use a Beosound 9000, or other preamplifier.  Let me know if you are interested and I can send pictures.  They do have some scratches on the plexi but the displays are clear and bright.  $550 US. 

Thanks,

Michael