As cautious as I am to approach this thread I will venture to make a comment. I do believe there are wide differences in speaker cables/interconnects but am more cautious about optical. For one, the cables are designed to run hundreds of kilometers to transmit information before they need any boosting. Data loss over a few meters would be exremely small. A second point specific to emm is that with the dac as the master clock and the cdsd slaved there is an infinite jitter barrier thus jitter is not really an issue. I am cautious to think that there is likely to be a major improvement. Frankly, money is just not that plentiful for me to spend several thousand on this chance. More music would likely be a better idea but its simply my opinion.
Gary
Gary