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It's less the camera settings or plugins than the lighting.  This is little more than classic, good studio photography.

From the shape and position of the catchlights in his eyes as well as the lack of shadows on the background + controlled shadows on his face, my guess is that the photographer used traditional clamshell lighting:  most likely, a medium beauty dish directly above the camera, and some sort of fill under the camera.  The fill could be a softbox, a strip-light, or even just a silver reflector laying flat just out of the picture, below his torso. From the shape of the catchlight on his irises, my money would be riding on a strip light for fill.

Obviously, the background was flooded uniformly with light to bring it up to a nice light gray.

While Topaz Detail might have been used to bring up some details (as the name suggests), and I can't rule it out, IMHO, that was a very minor factor in achieving the overall look.

Tom M