Hi End Audio stores in Toronto

Alternative Audio (Dundas)
Audio Excellence

There are some others but these have a good balance of service and selection

Toronto Home of the Audiophile
American Sound
Audio One
Ovation Audio (Aurora - N of Toronto)
Executive Stereo

For all things analog:

My Kind of Music

John knows how to set up turntable perfectly, is very knowledgeable and easy to talk to. No pressure for buying either. His systems are all optimized and nicely set-up.

Also, some interesting items can be found here:

Applause Audio
Audio Oasis

And there is Audio Eden, who mostly sells out of his house at usually good prices:

Audio Eden

Of course you should have a look at CAM as well:

Canuck Audio Mart

With best wishes from Toronto!