agree with fuzz that at 3 grand the psa-ds is a decent buy, even with the unit now at end of life in terms of further development and updates
the firmware versions materially change the musical presentation of the dac, though it takes a little patience to reload earlier or later versions if you want more warm/romantic or more forward sound
the bridge feature isn’t too good though, hurts sound quality
in my experience it is a full step below the chord dave or mscaler/hugo tt2 though...