I have a Marantz 7200 and am using Xantch CFL Friendly Dinky Link, Connecting block and mouse emmitters. All of the components work perfectly with the repeaters except the Marantz 7200. I have tried 3 different style emmitters and the Control input on the back of the unit. Some of the functions work well but others do not. Specifically Volume up down and mute. I must have the remote pointed directly at the pickup and no more than 2 feet away. So I tried to us a pronto TSU2000 since they have really strong IR. this got me another foot or so. but source selection and other functions work fine...Any ideas??? I am begining to look bad here. I am thinking maybe out of the frequency range, but if so why don't I see more posts and why some buttons and not others Arrrggg...btw it works fine if I am pointing directly at the reciever...