Maybe I'm confused, but why would you take a digital signal and convert it to analog (in the SDA-490t) pass it to a DAC (remember - that means Digital to Analog Converter) in analog format for the DAC to convert it back to digital then re-convert it back to analog? Or does the DAC simply pass the analog through - in which case, why use it at all?
Or, as OBI is stating, if you take the digital out of the SDA-490t, you'll just be testing the transport, which is at least a decade old, and getting none of the benefits of the DAC or the tube sound out of it.
It should sound like it isn't there!
There is a difference between hearing and listening...
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