I have a PS Audio DSD Mk1 that was upgraded a few years ago by JK Richard’s at APS, which made significant improvement over the stock DSD Mk1. I’m now considering sending it back to APS for his latest upgrades, which many have said take the DAC to a whole new level. There are some posts on PS Audio’s forums that say it now competes with, and it even sounds better than PS Audio’s new PMG DAC.
Here’s a quote from someone who made the comparisons.
"I have made comparisons to Denafrips new Terminator, Chord Dave, dCS, PS Audio PMG, Esoteric N-01XD, Bricasti M3 and Holo May KTE among some others and I feel none of them were better sounding."

