Most FFT software may correctly show the levels of the harmonics but incorrectly calculate THD+N etc be aware. Please watch the tutorial about Arta using with Cosmos and 9038S/D DACs https://youtu.be/eguKMNZ-XJw While I've labelled this article an "EARLY LOOK" since I'm using a pre-production unit, I hope the discussions here provide more than enough information to understand how this works and will get you well on your way with using the device.

As an audiophile who's targeting my writings in this blog to those who desire high-fidelity audio reproduction, the E1DA Cosmos ADC represents truly a "new world"of opportunity to go beyond the usual subjective evaluation of audio gear at a minimal cost of admission. This is as good an invitation to democratize and empower high-quality measurements by hobbyists as I have ever seen. I would like to thank again to Ivan for sending me this impressive piece of audio measurement gear that turns any ADC in a real measurement device. I also much appreciate the communication with Ivan, although I am aware that he prefers Discord channels instead of messaging of other kind. From that perspective the Cosmos ADC is not an ideal choice for this use-case, as you need an additional box to make it work well. Almost perfect white noise spectrum, with only a bit of low frequency rise. The chart starts at 2Hz so performance is better than it looks at first glance. With these settings the white noise is -187dBFS at 1kHz. E1DA also provides the Cosmos Tweak software for Windows, through which it is possible to control the levels of harmonic distortion, the interpolation filters and the integration parameters of the ADC.Customers are to bear the consequences and fees incurred, if the parcel was undelivered due to any of the following situation: Yes, it's nice to be able to use the ASIO drivers. With the latest REW, I have been able to use the Cosmos ADC with ASIO as well which is convenient without going the route of ASIO4All or FlexASIO (which still work when I need to use them since Cosmos ADC ASIO is input-only). to preserve the original ESS ADC chip performance as high as possible and keeping the cost under tight control, the ADC utilized a direct FDA front end with different input impedance across the gain ranges. It makes voltage drops at the DUT outputs if one has a relatively high output impedance and minimal ADC input range selected(1.7V, see the specs), I did mention that above and have just repeat it again.

You must return an item in the same condition as it was received. You must also include, in the same condition as it was received: ADC stands for Analog To Digital Converter. Since computers only process digital information, they require digital input. An ADC, such as the Cosmos ADC here converts an analog input into a digital signal to process on the computer system. It is widely used by professional reviewers and audio enthusiasts to measure their audio gears. High-Performance ES9822Pro ADC Chip:- The best way to power Cosmos APU with a power-bank(or a good smartphone charger), is to minimize GND loops issues.LEDs on the front panel work as a "Signal" indication - green if the STEREO mode and the input > -30dbfs, or blue in the MONO mode. A "Clipping" red-LEDs indicate that the input level reached 0dbfs. i.e. 80s style as I believe ;) Finally, you have a fixed very long focal length, like the 800mm f/11 Canon launched some time ago. Relatively cheap, if you compare to the pro zooms, sharp, and will give you awesome details of distant small birds, even on a lower resolution camera.