I have the E70 Velvet, but at this time have only used it to run my television optical output through the main system, or my wife using the Bluetooth connection for her music library. I especially like that it defaults to the last input used, and has 12v triggers.
The e70v is a fine unit, and one of the few using the newer AKM chips. Build quality is great, but the user interface is kind of drag compared with the EverSolo DAC-Z6 my office system. I have not tested one against the other, or compared them to my main system’s DAC (Holo May), but both provide great bang for the buck. The EverSolo’s ease of use (UI), slightly better build quality (case work, screen), would make it my first recommendation in the $450-550 price range.