I have an MSB Premier DAC and Digital Director, which is connected to a D’Agostino Momentum C2 preamp and Momentum S250 Amp. Does this added information change the recommendation?
Thanks for the update @dbelam . It does. With the director, you have great isolation and reclocking arriving before the DAC already. So the Pro USB vs USB vs Universal I2S are much closer to each other. The Pro USB as extra isolation, but I have this unnecessary with the Digital Director installed. I would probably encourage the standard USB input as it will give you the most flexibility for future system changes.
If you have a dealer who can give you an AB demo to choose between the USB and universal I2S, that could be the best way to make a final decision.
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Just a FYI, the Universal I2S is not a clock synchronous input. I’ve yet to see a source with an I2S output that supports an external word-sync clock.
As Daniel said, both the USB sources will be clock synchronous as both are running off the audio clock in the DAC.
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Will this work with the MSB I2S input module?
An SACD player with I2S DSD64 output for external Dac other than PS Audio.
It’s $2,400 (vs PS Audio’s $7,000 or $9,000).
Here is a recent review,
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If anyone nabs one, let us know. If one gets sent to us we should be able to accommodate it if the performance is there. Free I2S input module for whoever does 
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I think maybe the Laiv Harmony has a setting for internal/external.
One of these Onix players just showed up at the office, we will be working to add it! Thanks
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Impressive
Someone heard the call for a free I2S input module 
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Now any thoughts on extending the same concept of a free module for the Aurender N50
Heh, Aurender sent us the N50 directly and indeed got a free module
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