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Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

RF output from DACs is real.

DAC reviews usually measure the output spectra in the audio band. This is how these devices are typically measured and reviewed, but this does not mean they don't have RF output. If you would like me to agree, I would agree with you that almost all consumer digital audio products are improperly designed. That's the way it is, and in many cases they are improperly designed because the designers don't really know what they are doing. (With rare exceptions, there isn't enough money in high end audio to attract the necessary talent which is working on telecommunications and military systems where there is more money to be made.)

I suggest you look at some of Miksa's measurements of DAC spectra into the RF region. You will see that many, if not most, DACs are not properly designed. In the linked page post #806 is most relevant.




Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar



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