The iFi Nano iDSD is the little brother of the Micro iDSD. Half the size, but certainly not half the performance. The Nano iDSD has a somewhat smaller battery on board and lacks some of the more exotic features of the Micro iDSD, but in terms of sound it comes pretty close. With its output power of 285mW at 32Ω, it can effortlessly drive most headphones on the market, and it has a separate output for sensitive IEMs. With its S-Balanced system, both balanced and unbalanced headphones benefit from reduced noise, distortion and crosstalk. To top it all off, the iFi Nano iDSD is the first device from iFi to be fully MQA certified.