Buy a $40,000 10 year old amp for $4,000 or new amp for same money?


Hi. There are bargains to be had on really high-end components that are more than a few years old. DACs change too much and we need the newer technology. How about amps and pre-amps? I know it can depend on the specific amp but in general is a 10 year old amp that was $40,000 in 2009 and now sell for $4,000 a better value than a new amp that sells for $4,000 in 2019?  How much has amplification evolved in the past decade or so? (I posted a similar questions about speakers in that forum). Thanks for all the input and wisdom. 
mcmanus
What $40,000 amp and speakers have you have seen that is selling for $4,000? Can you name one? I doubt it!
Often, that can be the case. All audio equipment depreciates over time. My current used Class A amp cost around me 50% of the MSRP, and is about seven or eight years old, if I recall correctly.

Can you give us more specifics about the amp?

Before my current amp, I ran a 125w Class A amp from the 1970s for the last eight years. I had to have it completely rebuilt but it gave me eight years of sweet Class A sound for a few grand. It was a 90lb beast.
@mcmanus has posted the same questions about DACs, Speakers and Amps.  Silly questions!