The ordered Aune S9c pro arrived to me. I liked the device, the workmanship and sound are very good. Neutral lows and mids, highs very extended and a little bright. But the high frequencies are not harsh, but very clean and detailed. Moreover, they are not synthetic, but rather natural and separate well. The lower range is fast and detailed, as is the overall sound. But the attenuation of sounds is also worked out well. The stage is voluminous. Sound sources are clearly localized and do not mix, but are separated very well. Overall, a very detailed and nuanced sound that is sometimes surprising and disconcerting. But the musicality and melody are also good. For me it's a good mixture of musicality and analyticalness. But a little more analytical. So far I like it. It's interesting to listen to music on this DAC.
The volume knob can be used to adjust the volume of my headphones quite accurately. But on an unbalanced headphone output you have to turn the knob a little more than, for example, in the DAART Canary-2. For example, on my T70p I listen at a volume of about 50%, on Ananda 60-70%. And I’m not sure that some high-impedance and tight headphones will have enough volume and power at this output.
I also didn’t really like that DSD files are not played through coaxial and optical inputs, but only work via USB. In general, I liked the device, it is of a very high level and it is very exciting when listening to different music. After warming up the device daily, it begins to sound better and more interesting.