I had the miniDsp SHD Studio running into a Benchmark DAC since the studio doesn't have a DAC. So it's not an apples to apples comparison but I found the Dirac very helpful with their room correction. Here's a review and measurement of the SHD.
https://audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-minidsp-shd-dac-ds...
https://audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-minidsp-shd-dac-ds...