Specifications VS Sound Quality


Surely, I am normally aware of some specs like power output, THD and, maybe some other basics.
But by knowing specs of a component do you really have an understanding of what a piece sounds like?
Maybe that is an obvious no. Not being particularly technically oriented, I want to hear it.
mglik
millercarbon:

As someone whose eyes start to glaze over whenever technical specs become the topic of discussion, I'm reassured by your post, given your  knowledge and experience  I've always depended upon my ears and so far, they've served me well. . . 
Specs are mostly useless but with years of experience you can sort of read between the lines. A 100wpc $300 Sony receiver is not going to be equal to a 100 wpc Musical Fidelity integrated even if ALL the specs are comparable. . 
I was prompted to start this thread by a friend who is as extremely knowledgeable Audio manufacturer and audiophile who looked at the specs of my new amp and said that it was one of the best amps of its class available. He also heard my rave comments. I liked the encouragement but wonder what the basis of his remarks.
The main value  of specifications to someone who knows how to interpret them properly  is objectively deciding which components to try ie which components are likely to work best in a specific system with others.   You will get to a better place faster if you learn to assess and use specs properly.  Otherwise deciding what to buy is a total gamble with nothing concrete to validate buying decisions other than hearsay or pure guessing. 
In most of the cases specs are just the last part in the page. You read those you are interested in as to have a better picture.