as I said no, I believe there is no audible difference. I just wanted to explain why some people want to have a "perfect chain", like a peace of mind.But your approach insinuates the differences are audible.
In the presented cases, I highly doubt the diff. would be the audible.
I'm using an updated x4700h and I would be happier if it is still using AKM DAC, even though I hear no difference compared to my x3400h