I use both my beo4 with my beosystem1 and a Sony AV3000.

It was a pain though, as I had to reprogram every button and there is no seperate on/off buttons in the lcd. So I used the recall button as on for the component and the power(off) button as the standby. Otherwise it controls everything, though only the beo4 remote I have ever seen seems to be able to point at a wall in a room without the beolink(with the door open of course) and operate a sensor in the other room.