Not a thing.
I think that your transport (the Sony) is more than fine. I'd be flabbergasted if a statistically significant number of people could reliably tell the difference between that and the boutique players.
IMO, people buy "the expensive one" in audio for reasons other than quality of sound.
Quality of source is important, but I think that term refers most relevantly to the quality of the recording or of the medium, not to the DAC or transport. If you were streaming 64kbps MP3's or something, we'd have to talk.
Really, don't worry about it. You'll have a great system that will easily reveal everything that is on the CD. You'll really be able to appreciate the quality of the recording and mastering process.
We are a whole community of "that guy" - StPatGuy