No DAC
I have become interested in this concept: http://www.diyaudio.com/forums/digital-line-level/273474-best-dac-no-dac.html.
It appears your card will support this. But there are two questions. First, what is the output impedance of the DSD output channels, and 2nd what type of load will they support?
Would love to try this out with my board, pending your reply.
I have become interested in this concept: http://www.diyaudio.com/forums/digital-line-level/273474-best-dac-no-dac.html.
It appears your card will support this. But there are two questions. First, what is the output impedance of the DSD output channels, and 2nd what type of load will they support?
Would love to try this out with my board, pending your reply.
some info...
For questions on availability please contact Jesus at Sonore, go to sonore.us for contact info.
I2S output has 33R series resistors, so I suspect the output impedance would be dominated by that. As far as what kinds of loads it can drive... I do not know as it was never designed to drive a passive filter as you are suggesting. Having heard a couple of passive filter only DSD stages it is my firm belief that such an approach only works if one is willing to have a lot of spurious noise at low levels.
For questions on availability please contact Jesus at Sonore, go to sonore.us for contact info.
I2S output has 33R series resistors, so I suspect the output impedance would be dominated by that. As far as what kinds of loads it can drive... I do not know as it was never designed to drive a passive filter as you are suggesting. Having heard a couple of passive filter only DSD stages it is my firm belief that such an approach only works if one is willing to have a lot of spurious noise at low levels.
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hi Barrows,
i want to add SPDIF output to the Sonore card and have found Ian's solution.
http://www.diyaudio.com/forums/group-buys/207438-ian-asynchronous-i2s-s-pdif-fifo-kit-group-buy.html
manual here : http://www.diyaudio.com/forums/atta...fo-kit-group-buy-spdif_interfaceboardv1.0.zip
will it work together?
Hmmm.
alec, I do not have the time to research Ian's designs, but this should be easy to figure out. The Sonore USB provides a standard level I2S output (including master clock), so there should be no problem using it with any SPDIF transmitter design which accepts an I2S input. Ian's asynchronous buffer will be somewhat redundant (as the Sonore USB already supplies a super low jitter re-clocked data stream from Crystek CCHD oscillators) but that will not cause any problems so to speak, just be a little more circuitry than one needs.
alec, I do not have the time to research Ian's designs, but this should be easy to figure out. The Sonore USB provides a standard level I2S output (including master clock), so there should be no problem using it with any SPDIF transmitter design which accepts an I2S input. Ian's asynchronous buffer will be somewhat redundant (as the Sonore USB already supplies a super low jitter re-clocked data stream from Crystek CCHD oscillators) but that will not cause any problems so to speak, just be a little more circuitry than one needs.
Interesting. Does anyone know whether there is any advantage at all to having the signal re-clocked twice? I too have Ian's FIFO circuit which is working beautifully but I like the layout of this board but don't want to just add psu noise and additional circuitry for no benefit at all. My goal is to replace the waveio with something that can handle DSD. Perhaps in my case the amanero would be a better bet but this does look like a lovely board!
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