Brands that have the least depreciation

If I was in the market for second hand equipment, I would only consider brands that service their retired equipment in house.
On the other hand, look at the money early, Japanese, solid state is pulling in now.
What will the download generation crave?

Definately B&W Loudspeakers,AR,Classe,Mark Levinson,Perreaux ,Klipsch, & Magnepan just to name a few . I would not touch McIntosh, Wilson, or ayre with a 10 foot pole. This is just my opinion.

I'll mention two not said so far... Wilson Speakers and conrad-johnson electronics.  I've had good resale and trade in experience with both.

Without a doubt McIntosh,a few of the ultra high wattage are even bringing 75 % of retail purchase price under 2 years old .