I watched this the other night.  A true hole-in-the-wall studio that turned out massive hits.  Shag carpet on the walls.  Dirty.  In a warehouse district in Van Nuys (I think).  Turned out tons of gold and platinum recordings by Fleetwood Mac, Tom Petty, Nirvana, Rage Against the Machine, Neil Young... many others.  
 
http://buy.soundcitymovie.com/
 
Proves you don't have to have state-of-the-art facilities.  They did however have a "magical Neve board".   Of course, we all have Neve equipment don't we?
 

I was wondering where my reply went - then saw the duplicate topic!

i'm pretty sure we had a big discussion all about this show back when it came out in 2013.
 
i actually bought the dvd!
 

I loved that doc. 
Combined with "Standing In The Shadows Of Motown," and "Muscle Shoals," there's been a great push towards recognizing the history of these recording icons.