Brands that have the least depreciation

Or: which brands will you not want to sell for a very long time? Economically the best strategy is to buy once, and then enjoy for a long time. In audio real technological change is only slow. The only two quantum leaps that I can think of were the introduction of the LP record and the introduction of the CD and later other digital derivatives.

Pass Labs, Transparent Audio Cable...companies that are high quality and don't change models very often...Aerial 7b, 8b, 10T are terrific speakers whose value hasn't changed in many years, in fact seems to have risen lately...lots of cables if bought used will hold full value for many years

Simaudio Moon amps and phono stages has pretty good resale value