"Last year was a stellar year for new headphone amps. For us one stood tall among the rest. The MOON Neo 430HA (D for on-board DAC included) took on all comers and remained undefeated. The The 430HAD offered the power to drive any headphone; the flexibility to accept Single ended and balanced (3 or 4 pin!) an incredibly overbuilt power supply for ultra low noise floor and the most precise volume control in the market. The 430HAD’s build quality is exemplary. It can also be used as a two-channel pre-amp of high-end caliber quality. This is a unit you will have for years or probably forever. Bravo Simaudio!"