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In Reply to: Re: Why USB? posted by audioengr on October 19, 2004 at 10:24:33:
a'e',Is it possible to connect a cd/dvd transport with I2S (such as a Pioneer deck) to a USB-equipped DAC? How ugly would it be, sonically, or are they just not compatible?
If so, it could prove a really useful bridge for curious audiophiles to make the transition to more solid-state digital replay in the future (assuming the same or similar audio benefits are available with such a theoretical configuration).
Big J.
Follow Ups:
I suppose it is possible, but I dont think you would want to do this. The USB protocol is vastly different than the I2S. The I2S is close to what the DAC chip needs already. A direct I2S interface, such as that in the P-3A DAC makes more sense.
Putting concern aside for a moment, how could it be done? Is it as simple as buying some kind of adadpter, or would one ned toget 'messy' and do some circuit board surgery?Many thanks for your knowledge on this.
Big J.
You would need to design a protocol converter. You cannot buy this. And then prototype it on a perf-board. Very expensive...
Just thought it might be interesting to be able to use a Pioneer multi-format player with I2S straight into a USB DAC. But its clear that IDKWTFITA, if you catch my drift. Nice idea, and it would have given me an excuse to fit some other bits and pieces I have knocking about, for extra flexibility.Thanks anyway.
Big J.
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