The extremely inexpensive, extremely high performance ADC that knows all to well what she offers, plays hard to get. I finally have her working well enough to get some usable measurements, while other areas of its behavior befuddle me. Unfortunately there isn't much of any documentation to cover what are probably extremely common issues.
We are talking about the EIDA Cosmos ADC.
It is several degrees more sensitive that my RME ADI-PRO, so much that I am compelled to go update some of the measured results in my review of the ifI ZEN V2 DAC. And that is VERY exciting, because it refined my measured numbers to practically match exactly ifI's measured results. Off to a great, great start.
On the other hand, its usability is so bad, I not sure there is a category to describe it. Maybe it will work today, maybe not tomorrow. I am still trying to figure out why it gives up after about 10 or 15 seconds of measurement, then starts all over again. Anyone who has ever measured anything with an FFT Spectrum Analyzer knows what kind of havoc that plays on the results. It is also marketed as a Vinyl to Digital ripper, yet, there is no way that works as it currently stands. 15 seconds of playing nice? A big No Go for recording vinyl or anything else. (RME may give up some in SNR and THD, but it's perfect in everything else. Easy, so easy to make it play nice with every single Audio Analysis software I have tried.)
There is a huge online forum for this thing, and I am sure I will figure it out. Maybe it has something to do with the fact that the driver never fully installs because it says during the last few seconds of install, it can't find the ADC on the USB bus, although other software designed for volume control and manipulating the ESS chip's harmonic distortion cancellation programming certainly works.
AH COMPUTERS. YOU love em and hate em. To quote the famous Kermit the Frog and Rowlf the Dog,
You can't live with 'em, you can't live without 'em
There's somethin' irresistible-ish about 'em
(IT) made a monkey out of ol' King Kong,
I hope that somethin' better comes along....