Phil,
The switches are cool, but overkill - they just control function selections (like for AM radio, FM radio, Phono, tape, etc) and the power on/off. Guess the 'pushbutton atomic' look was what they were aiming for!
The Clairtone products were indeed made in Canada, but they were also exported to the US. I think there was a print ad with none other than Frank Sinatra pitching for Clairtone sound systems in the early 1960s.
Also, the founder of the company, Peter Munck, was an engineer and electronics designer. The famous Project G stereo units were built by a designer named Hugh Spencer. You nailed that one!
The company failed in 1971 and Electrohome took over production for a time, then phased out the brand name altogether.