Digital Interface Nervosa (USB, I2S, SPDIF, TOSLINK, AES, DDC, WTF, BBQ)

Does anyone have any factual evidence (or even opinions) on USB cable length?

USB 2.0 cables should work fine for data transfer up to 5m (16.4 feet) but I’ve seen a lot of recommendations to keep the USB cable as short as possible for audio, with a max length of 1.5-2m.

I haven’t seen many facts backing that up, although someone on the audiophilestyle.com forum did a test on USB cable lengths (scroll down to the post by John Swenson). He found that all USB cables above 6 feet had errors other than Supra.

I only have 1m USB cables, but I’m curious if other have had success with long cables.

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