EverSolo DMP-A8 with Denafrips Pontus 15th, both have i2S

I believe the I2s interface will use the streamer clock when connecting to your dac.  If your dac has a better clock than your streamer you might be able to configure it to use the dac clock.  Otherwise, you are losing performance.  If you use a ddc, the denafrips ddcs at least do not have an I2s input, you will need to connect the streamer to ddc via some other connection.  The clock in the Hermes ddc is better than the clock in the Pontus dac so you should get improvement as @fthompson251 suggests.  Is any of this worth the money and time, only you, your ears, and wallet can answer.  I have a Hermes ddc connected to my Pontus II and it was worth it to me.  I noticed improvements in soundstage, imaging, transients, and bass response.  All good things.

Thanks for the replies. So, If the Pontus i2S input is used, the Pontus clock is completely bypassed? Interesting, much more to think about now. In further research about the DMP-A8 i2S output, they claim it is a good DDC with Dual High Precision Clocks, quoting, 2 ultra-low phase noise femtosecond high-precision clocks for audio decoding circuit (45.1584MHz and 49.152MHz) etc.... Probably not as good as a Denafrips DDC, but maybe worth a try.

As has been pointed out; if the clock in the DMP-A8 isn't as good as that in the Pontus, or indeed a Denafrips DDC, by using I2S out of the streamer in to the Pontus could mean you maybe actually losing performance not gaining any. 

Whether the clock in the DMP-A8 is better that those in the Denafrips DDCs, or the Pontus 15th I suppose is the question 

Well, I guess for the short term I should use USB from DMP-A8 to Pontus 15? That is if I can't hear a difference? I appreciate all information, whether it's good news or bad.

What should I be listening for, to compare two different DDC’s. I know this is probably a loaded question, and not sure if there is a good answer. Just reaching out and trying to learn.