How good is your hearing ? And how do you know ?

Why do some believe that enjoying music starts with the ability to hear frequencies of 14k and up? My frequency hearing limit is currently around 12k, and I still love music as long as it sounds the way I think it should. I'm way over 60 years of age, but I'm still very much able to hear differences, can hear differences between equipment, specially speakers, so I'm still able to make choices, and to purchase the equipment which sound right to my ears. Anyway, believe me, (and I'm sure most of you know) a vast majority of the audible music is not in the 14k-18k frequency range ;)

Don't worry too much, as mentioned, I can currently only hear up to about 12k, and even to hear that I will have to really concentrate. But I could clearly differentiate between my Gryphon Mephisto power amp and my CH Precision M1 amp. Both being good power amps, but with different sound. So most likely it doesn't have too much to do with frequency, it's just a different sound, and some people will choose amp A, others amp B. 

@inna 
Unfortunately I have no experience with the FM Acoustics. Gryphon is great indeed, nevertheless, I'm now using the CH Precision M1. As stated before, both are very good amps, but my personal preference made me change from Gryphon to CHP. Still using Gryphon amps for the bass towers. 

@inna 
Yeah, I'm using Gryphon speakers, it's all about having the preferable equipment combination for your own ears. It's not (or certainly less) important what others think.