Re the computer idea .. Ok in theory but who can provide meaningful comparisons on the effective jitter from a pc as source?
I can, I can!!!
I have an M-Audio firewire 410 interface and also an M-Audio SuperDAC, which are both from the same era and use the same DAC chips.
If I hook the SuperDAC up to a Micromega CD player and play a CD, versus ripping the CD to the PC and playing it through the 410, the 410 sounds much better.
If I put a Monarchy Audio DIP 48/96 Upsampler in between the CD player and the SuperDAC they sound identical. I don’t think the difference is the ‘Upsampling’ but rather the reclocking that the DIP is doing, so the SuperDAC is getting a better clocked signal. The difference is quite marked.
The DIP and SuperDAC were an improvement over the Micromega Leader player, which was already good and better than the Marantz CD72SE I demoed it against. The Echo Indigo PC card I mention was better still, and I am guessing that the even better ‘clocking’ and connection provided by it being a PC card was advantageous.
Lynx Audio did the LynxTWO soundcard (I have one) which gave pro-studio standard levels of ADC and DAC and is hosted in a PC, so the noisy environment is not necessarily a problem.