I know Eversolo gets a lot of love but , before buying type "eversolo problems" in your Google AI search bar.... They fail miserably at firmware support. No USB output on an A6 since June with no resolve. This was a unit that worked fine for 11months
They did something in the last update where it now occasionally recognizes the DAC but still no sound. That's at least 4 updates since reported. No response from Eversolo just days before warranty was up. They are throw away electronics should something go wrong after warranty.
Buy an Innuos if you have a large music library.