How Much Are Canadian Customs on US Made Imports

You are correct. As long as it is made in the USA there is no duty.

The have an import duty on everything. I sent a pair of used Paradigm Atoms up there some years ago, and the unfortunate purchaser ended up paying slightly more than a new(canadian made) pair would have cost him. That was my first experience with their rip-off..., uh- I mean: Their tariff system, or I would have warned him.

if you are lucky, roughly 15%.
If it is ever ship by UPS add an another 50% for their famous brookrage fees ....

There is no Canadian duty on U.S.-made audio gear. NAFTA assures that. However within Canada there are federal and provincial sales taxes imposed on every purchase except some held to be basic necessities. Audio gear is not held to be a basic necessity, so taxes have to be paid when you buy it, no matter whether you buy it in the States or in Canada.

That means that when any audio gear crosses the border from the U.S. to Canada it will come with a tax bill based on its declared value.

There may be other fees also. If the gear wasn't made in a NAFTA country it may have another 6% duty imposed. In addition there may be brokerage fees, depending on the carrier's policies and rates.

If the goods are manufactured in the USA, no duty.
You will have to pay GST and Provincial tax unless you live in Alberta where there is no sales tax.

But if the origin of the product is manufactured elsewhere then you will have to pay import duty. The duty percentage will vary according to origin of product and the type of product.

You can save money by acting as your own broker. It is very simple to do as long as you have the time.

I have found that the brokerage fee from UPS typically was the highest.

When I bought my turntable I had to pay import duty (French turntable).