What brand is most recognized by non-audiophiles?

In your example the brand does not need to be an audiophile brand. In fact one could argue that ONLY an audiophile would know an audiophile brand very much like only an Oenophile will know the best wines.

So whatever brand is perceived as Audiophile to the masses is the brand that works in your example.

Unfortunately, I agree with those who have said Bose. Their marketing campaign is second to none in convincing the masses that they are very high end. Also, their ability to keep their overly high priced equipment from being discounted also, IMO, adds to the perception of it being an exclusive, high end, audiophile type product.

Bose, sort of like Glenfiddich, extremely so-so single malt that most have heard about.

I would say McIntosh.

The ones that make A/V gear.

That and Apple and then bose.

Then whatever else they sell at Best Buy these days.

All the rest don't even register.

The unwashed masses have the tastes of the Philistines when it comes to audio and rely on advertisements to show them the way.

That was kind of in jest but the advertisement part I truly mean. Aside from home audio adverts, the other one that comes to mind are the audio components that come with luxury cars so Bose, B&O, B&W and Levinson come to mind since they are highly touted as the best you can get for your car.

All the best,
Nonoise