@ghasley You presuppose I have not, and that is an error. I will be happy to test any cabling beyond what I have done, just as soon as someone can provide a plausible explanation for how a digital cable can impact analog sound quality. The cable, not the DAC, not the power supply, not some oscillator induced phase noise, just the cable.
You say"Now, imagine streaming music. It absolutely requires proper buffering. FULL STOP. You cant have the data stream begin and then “error check” on the fly. Jittery at best, drop outs at worst. SO, how is the buffering performed, how much of the data is able to be buffered into memory, what and how is the data streamed from the buffer and what/where/method is the clocking/reclocking performed? There was alot more to the conversation and todays streamers/dacs do a wonderful job with the challenge. Some do it better than others and some do it completely differently." And I couldn't agree more.
Then you continue, " We are still in the process of understanding why certain materials, lengths of cable, shielding or lack thereof along with which method of transmission provides the best results and which do not. But it is audible. Ive tried to buy equipment from companies that seem to have a grasp of the importance of timing, lower jitter and clocking." None of this has anything to do with cables, but rather how the interfacing equipment performs. In your own words," Ive tried to buy equipment from companies that seem to have a grasp of the importance of timing, lower jitter and clocking." Those are attributes of active components, not cables. If an active component is so marginally engineered that it cannot perform properly with an in-spec cable, and has some special cable attribute as a requirement, I suggest the manufacturer needs to either document that or re-engineer the device.