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RE: An insolent provocation .... if a usb dac is very well design (and built) the pc quality should not matter

Tony,

There are many options to isolate things.

One of the problems is that the common RF based isolators often cause more RFI than they remove. And if you need 50MHz bit-clock few isolators will even work acceptably.

All options have substantial challenges to resolve and are not cheap.

I tried something using in principle Ethernet targeted parts (magnetics and LVDS drivers), but even this in the end is neither cheap nor that good.

If you have any suggestion of a simple and reliable low jitter solution that does not create massive amounts of RFI of it's own, I am looking, a PM will be fine though I would not mind if you can share it in public.

Thor

At 20 bits, you are on the verge of dynamic range covering fly-farts-at-20-feet to intolerable pain. Really, what more could we need?

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