I made mistake not beocenter 9000.
My systerm:
1. boesound 9000 6-cd/tuner use beo4 remote.
2. beomarst 6500 tuner/amplifier use beolink 7000 remote.
3. beomarst control panel av9000 tuner/cd/cassette use beolink 7000 remote.
I am not sure above of all can be controlled by beo4 remotes.
I just want to have these to be controlled by remote.

Thank u!