Isabel, I don't believe that you've described what sort of wiring you have now. Nothing beyond regular lampcord is needed and apparently you haven't read this often-cited explanation of the topic.

Incidentally, "Joe" has been reported as now advising callers that 6th Ave. will no longer sell the Yamahas by phone at all, just in-store. So, don't be looking for that deal to re-appear.

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Enjoy the music, not the equipment.