@tiagocarneiro I have the Aavik U-280. By far one of the best integrated amps I’ve owned. The built-in dac is phenomenal. I compared it to the Denafrips Terminator 2 dac which I owned when I was auditioning the Aavik. No comparison, the Aavik dac was substantially better than the Denafrips. I also compared it to T+A Dac200 and it was equally good. In fact, the Aavik had better bass control than the T+A.
I also auditioned the U-150, and preferred the U-280. Of course, the 150 has a world class phono but other than that I preferred the 280 in my system. I bet the 580 is even better.