Originally Posted by Chris J
Some of these links are good.
What I was very subtly getting at was the caps in the photo may be MASSIVE, but you also need to be able to reject and suppress very high frequency noise.
As some of your links point out, big electrolytic capacitors are not going to do it.
They are actually inductive at very high frequencies.
While what you are saying is technically correct, I think you are missing the point. The jumbo electrolytic caps are very effective at filtering out noise in the audio-frequency range (< 20 kHz). The effect you mention regarding inductance at high frequency isn't relevant until you approach the megahertz range (See the analog devices tutorial I linked above). The high frequencies are rejected using small (picofarad--microfarad range) ceramic or tantalum capacitors placed in close proximity to the active devices in the circuit. Go back and take a careful look at the Schiit circuit and you'll see numerous small capacitors near the active devices. These reject the high frequency noise and suppress high frequency (MHz, inaudible) ringing.
The reason I pointed out the large filter cap's is because 1) they're huge and laypeople can even find them in the picture and 2) they reject the noise in the power line at the audible frequencies.
Also, this is a little off topic in a thread about USB-standard passing cables deteriorating sound in USB devices. I'm saying that 1) it's highly unlikely for a usb cable to have an audible affect and 2) if it does, it's not the cable's fault; rather, the usb device or computer usb controller is a piece of junk.
A well-designed modern asynchronous usb dac can be had for under $100 and the choice of usb cable, as long as the cable is standard compliant, has no affect on the resulting sound. The data is delivered error-free and the power is supplied.