Stevnp:
1. I changed my BL 4000 from Gold to Blue alu. ( not an easy job ) and substituted the BL 4000 with a pair of BL 4 during the work. This is the BL 4 full model, not the PC., although I have the B&O RCA to DIN powerlink cables. The pair were connected via standard powerlink to our BeoSound 3200.
The sound difference was noticed: Automatically, we kept turning the volume up with the Beo 4. Radio and N.RADIO were fine. But things were missing, especially when watching SAT TV., DVD, or CD.
The night I finished, I could not get the new black grille covers on the Bl 4000 fast enough. Returning with the BL 4000, the sound had depth, bass and clarity again.
( By the way, there is a method to retain the old gold anodized covers and tops without destroying them: Use a heated knife for the glue like surgeon ).
2. The BL 4 then went from black to blue covers, and being 110-240 V capable was packed down to a vacation home in another country. The walls there are thick masonry, with more than a little echo, and the TV/STEREO wall cabinet is very close (3.5 m ) to the viewer.
Here the BL 4 excels. It functions with a direct mini-plug to a SAT TV, with a junction box for a Beosound 6. The speakers we found were best positioned on the top of the wall unit, which allows the sound to spread forward and up to the ceiling.
The density of the masonry accentuates the sound, yet there is no skip or multi-reverb effect. Classical or Chamber music is fine, as is the TV. I even had VIRUS SHAKE on the N.MUSIC a few times ( to wake up and get going in the morning ) and the techno bass was indeed pulsating.
Up to you, but I think your setup would do just fine with the BL 4. Go for it !