The DirectStream DAC has been the Stereophile magazine A+ recommended component for five years. The beauty of this DAC is that it is based on FPGA and can be constantly upgraded with firmware. There are tons of reviews and discussions about the improvements of every firmware upgrade.
PS Audio DirectStream DAC measurements by ASR
Looks like this DAC measured pretty bad for a 6000$ unit.
https://www.audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-ps-audio-perfectwave-directstream-dac.9100/
https://www.audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-ps-audio-perfectwave-directstream-dac.9100/