Brands that have the least depreciation


Which high end brands have the best resale values? 
goldenear1948
Denafris Terminator Dac was sold at 4200$ last year.

Now the price got jacked up to 4,500$.

I found that used one listed at 3,700$ (US Audiomart)got sold within a week.
Like many others have said, McIntosh definitely does well in retaining value. 

What is low depreciation?  If an item is 5 years or newer and sells for 60%.... or 6-10 years and sells for 50%... or 10-20 years and sells for 40%... would these items be considered low depreciation....what do you think... what might define “low”?