I owuld love to ask you how it went on upgrade and what the cost was? I have a im-4006 unit in my home that I was thinking of upgradig. The older Unit seems to have larger speaker panels and teh negative of outdated looks. My system has 8 seperate rooms. If the cost is really High I was thinking of going woth an entirely differant system altogether. I would really love to hear your input on the matter.

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