ne issue though, shouldn't you test it via USB not just spdif as that is how most, if not all, will be using it. USB also will allow all resolutions to be available. The USB section may also give different test results.
Absolutely correct. I originally intended to measure both interfaces and then post but there is so much interest in this DAC that I decided to release the S/PDIF data since it is much faster to run and some of the tests only run in that domain.
To expand, my analyzer has built-in digital (S/PDIF and AES) generator. So if the device supports that input, the analyzer can be in control of generating the signal quickly and gathering the results.
With USB, the process is "asynchronous" and I have to fire off the player with the right signal and trigger the analyzer to run. Not all tests can be run this way and the process is much more tedious when they do.
The newer version of the analyzer can use USB sound card on the PC as the source but unfortunately requires ASIO interface which in turn requires new drivers to be installed. I do all of my testing with Windows built-in WASAPI interface so I don't have to install drivers.
Anyway, USB measurements to come.