Tom Martin's Listening Room

@roxy54 They have a price list. Neither their services nor their products are cheap, but not out of line with Vicoustics and others, although GIK and Acoustic Fields provide a free assessment.   I use REW but that is not nearly as user friendly as writing a check. Not as much bragging rights either. I would not be surprised if Martin got a discount for his job, likely as did Darko with Vicoustics.

@kofibaffour There is science in terms of first reflections, not placing a QRD too close to the listening position (which it appears they did), diffusion on front and rear walls, and avoiding over-absorption. Perhaps they are able to place a panel within millimeters of its optimal position and that makes them better, but I believe close is plenty good enough for room treatment considering all of the myriad factors that one cannot address. Close will still sound remarkable.

Appears he has a PSI audio AVAA C214 active bass trap in the left front corner. Dude is serious.

They aren't minimized, they are virtually eliminated. Most intriguing is that RPG does not have any diffusion panels covered with fabric so this appears to be pure absorption. Not the way you usually do a room, so I have to assume something was done custom for aesthetics. 

The issue is not the way the room looks nor how many panels are up, but rather whether there is an appropriate mix of absorption and diffusion. Because there's no evidence of a diffusion device, I'm assuming they have them and just covered them with fabric so it was more uniform aesthetically.

I would not call this a "minor" setup.