I don’t know what the change in output from your pre/amp would be, but even in the Stereophile measurement, the highest spike is at -108dB. Now, going off the J-Test and THD measurements in this thread for the Schiit, maybe that jitter would or wouldn’t be an issue, as the J-Test for the Schiit has its highest spike around -110dB, but the THD plot (10ns at 10kHz) has it as high as -68dB. According to the measurements done by Steve (Empirical Audio), the SONOS has ~9ns of jitter.I guess the idea a few years ago was to give the DAC as little jitter as possible first. Now over the years I've got a bunch of DACs which measure almost perfect, but since I already have the SM, it is just easier to keep it in the system. But I agree it's usefulness now is not nearly as much as it was years ago.