first - thank you for the detailed answer! i'll try to explain the situation a bit different... maybe it will be clearer... the link line is like this: ==> IR receiver eye to ==> IR connection block with ==> output for 6 IR emitters. example for the IR kit: found video at the kit looks the same inside and outside just the brand label change. what i did was: i took a 3.5mm cable from the output of the IR connection block to the Marantz RCA "remote in" input (works as a "rear emitter"). and disable the Marantz front panel IR eye. and what happend is: when the Marantz is the only device attached to the IR connection block i can control the Marantz with the remote. when i attach one more emitter to the connection block the Marantz stop responding to the remote commands. hope it is clearer now... thanks!!!!