Law of Diminishing Returns; where does it kick in?



I think that most of us who have been in this hobby for a while have experienced the "law of diminishing returns", the point at which spending a lot more money produces a little bit better sound or just tradeoffs.

I would like your opinions on where you believe this occurs in Speakers, Amps, CD players, and cabling.
ultrakaz
In the real world it is the point you can't afford or are unwilling to pay for a subjectively minimal improvement. Of course this will vary from one individual to the next as noted. Hanging around this site ensures acceleration of this progressive disease. If someone could please save us the time and let us know if they have discovered "real" yet, I would be much obliged.
tibegroover

hangig around this site raises your threshold - you tweak more, but it also is informative of great equipment and the web available used market
I think this is what high end audio equipment dealers tell there customer who just spent 30,000 on a pair of Speakers. SORRY .....
Simply divide the system cost by Sound Quality Units to obtain the Diminishing Returns number. 

Any number under 10 is a poor system
Any number under 1 is a better system
Any number under .1  is SOTA 

The key to an accurate assessment is proper measurement of Sound Quality Units.   ;)