I cannot comment on non-NAFTA import fees into Canada, but under the Harmonized Tariff Schedule of the US for 2001, your typical high end stuff is covered under section 8518.40.10 (audio amplification equipment). For Canada, if the equipment entirely originates there (i.e. principally manufactured there), it is duty free under NAFTA. Otherwise the duty rate is typically 4.9% of the declared value. Declaration and payment of duty is done informally for personal items under $2000. Check your local US Customs office for further details.
