It depends on what kind of equipment it is, and where it is made. (in Canada/US, or off-shore, etc.) A lot of duties are lower or gone, due to the Free Trade Agreement. I don't think there are any duties on CD players, but I'm not up-to-date on that stuff.
You can always call Customs and ask them or check the Customs websites for that information.
You can always call Customs and ask them or check the Customs websites for that information.