The answer is in the URL

[lovingboth]

Do expensive HDMI cables result in a better picture or sound?

Comments

[zotz]

I used to share a flat with an engineer who worked on ad/da converters for places like Abbey Road, and he reckoned that clock jitter (rather than data jitter, which is what they've looked at at the other end of that link) has effects on sound significant enough to be worth paying money to avoid if you happen to be working at Abbey-Road kind of levels. Domestically, though . . . no. You shouldn't generally have a problem unless your cable is actually broken.

I'd be surprised if that article is wrong in its conclusion, but I would note that they're only looking at the kind of jitter that Andy said wasn't really a problem, so I don't think they have the "proof" they claim.

[ciphergoth]

Surely an A/D or D/A converter relies on its own clock, not the implicit clock of the incoming signal?

[zotz]

Apparently not. Clock recovery uses a PLL.

This isn't necessarily relevant to the case where you've a digital display on the downstream side - indeed, I'd guess it's not - but they haven't covered that case even as far as saying that it's not.