I saved $14k on my current car buying it <1 year used. It still had over 3 years of factory warranty and regular maintenance. There's really no reason to ever buy a new car unless you simply CAN'T get it used (Tesla).
For used headphones/amps/DAC's, with the reputation system on the classified and AWD categorizing the condition, seems like a no-brainer again.
You have still got to watch out buying a used car..take a qualified mechanic with you..some times too good to be true deals are not what they seem..might need a new chassis!