I went to use the hdr look or effect in topaz 2 and didn’t find it mainly becuase I don’t see a search function with the looks, may be there somewhere, but not finding it. Went back to studio 1 and found it with a search. at the top of the left panel.
In Studio 2, I found a Look called Dramatic HDR. It IS pretty dramatic, but of course you can tone it down as much as you like. Under the Look, they broke it up into the components that make up the Look; Precision Contrast, Vignette, and Basic Adjustment. All three of those are editable. The tradeoff is more control versus simpler interface.