CansforEver – CanEver's ZeroUno DAC-HPA is an all solid-state class A direct-coupled fully discrete headphone amp with USB, coax, AES/EBU and Toslink inputs and 2 x RCA outputs. Optionally, one of those can become transformer-coupled XLR. Headphone outputs are on 6.3mm and XLR4. The remote controls volume, balance, phase, mute and inputs. A setup menu offers various configurations.