My Popcorn Hour A-500 has an ESS SABRE ES9023P audio DAC and plays all my digital formats including my library of DSF files. Same with my Marantz SA-14S1 SACD. It has a Cirrus Logic DAC and performs as you would expect from Marantz so I am not sure why I would want to bypass the Marantz DAC on the notion that it might sound better.
I'm sure if I called PS Audio they would take great pleasure in telling me why I should use their DAC.
I had an opportunity to pick up a PS Audio Perfect Wave DAC. I read the DAC connects directly to the power amp, in my case a McIntosh MC500, so what do I do with my McIntosh C48 preamp?