I've been using S75s hooked upto a beosound 3000 and Avant and have really enjoyed the sound, albeit fed by an Hitachi amp from the Powerlink Socket. I have a pair of Beolab 4000's as well but not sure I like the sound too much - when all four are on it's actually quite good.

Anyway, I'm now toying with the idea of getting some Beloab Pentas and sell the Beolab 4000's and use the S75s with a standalond BC7700. Haveing heard Beovox Pentas this is the type of sound I am after. So if I get some Pentas will the display work and show teh sources being played both audio and video when hooked up to the Avant? and which powerlink cable is it I need? Also, one last question, If I get the cables now before the speakers, will it work as well with the BL4000?

Depends on which Pentas you end up with. Only the MK2 and MK3 have powerlink sockets. After that I believe MK2 powerlink, 8 pins. I think.

You can use any of the 3 types of Penta with an Avant. Mark 1's need the convertor cable to give you a PL interface.

If you plan to use more than two speakers at a time you may need the 4 port (as opposed to the 2 port) Dolby module as I believe its only the Mark 3's that allow you to daisy chain the speakers.

On one of my Avants I have Mark 3 at the front and Mark 2 at the rear, and on another just Mark 1 at the front.

All seem to do the job very well!