Sugar Ray's Vintage Recording Studio is patterned after Sam Phillips' Sun Studio in Memphis. It's not in Tennessee, though. It's in Essex, of all places.
Aside from modern acoustical treatments, every piece of gear is an authentic relic. More importantly, they are using authentic period techniques such as recording a full band with one microphone and accomplishing the entire mix through careful mic placement. Not just a historical curiosity, these are actually practical techniques that any home recordist could benefit from knowing.
Funny thing is, these guys aren't old enough to have actually seen such techniques in practice. They study photographs to figure it all out!
The recordings are available for download
here.