Ted, please cherish the sound and your no-jitter system. It is IMO a very rare thing, very fragile and to some degree a matter of luck. I would make as few changes as possible from this point on.
Years ago I have experienced sound in my system that interestingly I also described as "no-jitter" at the time. There is no way to compare it to anything, just music. Essentially unlimited dynamics and resolution of every note, absolute timing, PRAT and coherence, complete blackness, the dac had no sound of its own, every recording and instrument had a unique character and space. It wasn't smooth or sharp, warm or bright, it was just right in every way possible.
The interesting thing was that the setup was very inexpensive, XP computer with EMU 1212 pci soundcard feeding benchmark DAC1 via glass toslink. It was jaw dropping, to this day I don't know why this combination had this magic. The sad part was that I had to dissasmble the system for various reasons, DAC1 was already pending sale when I achieved this.
I tried going back to this very setup soon after, bought another DAC1, no joy, then another (different versions) but could never achieve the same result. DACs had their own sound, grain and magic was no longer there.
Since then every time I try a new dac/setup I look for this unmistaken sound. No luck so far, and I have heard many top notch devices including Meitner, dcs Vivaldi stack etc.
Sounds like you have striked the gold and you are right, there is no going back from that. Enjoy. Too bad it is so expensive 8-(
But with a right combination and luck it doesn't have to be.
