What is most important part of a system?


I remember reading someone saying that the most important part of a system was the source. I thought "Wrong! Speakers are the most important".
 
Now, I have changed my mind. Source is the most important part.

Right or wrong but this is how I came to this conclusion;

I have tried the same system with a CD player and a turntable. By far LP sounds better than a CD. Btw, the system had all high-end amps, speakers, cables, etc.

What is most important part of a system for you?


celo
Anyone who stated source first in their list of importance please let me know what source will turn any speaker into some magical transducer . I really would like to try it ! Thanks,mike.
In Jim Smith's book, Get Better Sound, he states the room is the most important component of any system.  

Many years ago I gave no thought to "the room" whatsoever.  Over the last 10 years or so I've spent more and more time voicing and acoustically treating my rooms and it's made a bigger difference than I would have ever thought...  food for thought.  :o) 

I would posit that the quality of the scotch imbibed whilst listening must be somewhere in the top 5. 
Room
Furnishings/Chair
You
Your mood
Decent music
Power
Source
Cables
Amps
Speakers 

The amount of times I have seen pictures of ultra expensive equipment in peoples homes with cheap furniture & a single chair is laughable.
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