Yes .. clock cables make a rather surprising - if not emphatic - difference ... perhaps more so than the signal carriers... go figureThat's what I'd been led to understand. I'll be using the Transparent XL initially between the Vivaldi DAC and Upsampler. So, it appears, in my case anyway, adding the Clock means adding 3 more XL's. Pretty strange that the cost of the clock is less than the 4 Clock cables. C'est la vie.
and given that a pair of Chord Music chime in at broadly the same cost as the clock... the “ ancillaries” rapidly either equal or surpass the boxes in cost