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Raw I2S is of course the better way of doing things, but layout and wiring/grounding becomes absolutely critical, even more so if you opt to work at higher sample rates. Your bit clock can be as high as 12.288MHz and master clock up to 49.152MHz. You'll ideally need a high-BW scope to really see...

Fully agreed - the only reason I deal with this is because it's my day job.. personally I use whichever cable can fit the easiest through the holes in my wall unit :) As said, the reason 99.9% of S/PDIF interfaces are pretty cheap & shoddily implemented is because it works perfectly fine for...

Simple: CD players don't use S/PDIF internally between the transport and DAC :) It's important to remember that clock and data is separate in the transport, and also separate in the DAC. S/PDIF combines the two on a single signal (cable) with Manchester coding. Unfortunately, the trick comes in...

Doubt whether it's worth it.. they tend to have different pinouts and won't fit the standard chassis cutouts. The very good ones also draw more current so the power supply and filtering may have to be adjusted. The really fast ones also don't fit the standard optical connectors from optical...

The argument of electrical being better than optical only holds true for when electrical is very properly implemented. Since the latter seldom is the case, it's not always necessarily better to go electrical as a knee-jerk reaction. Electrical S/PDIF is technically able to work with virtually...