Stereophile comments here

ADL—Alpha Design Labs—a bargain division of Furutech, arrived at AXPONA complete with the ADL H118 headphones ($299) and ADL X1 portable 24/192 USB DAC and headphone amp ($550). The latter, which supports Apple’s iOS and Android digital at up to 16/48 for iPods, iPhones and iPads, and runs 24/192 S/PDIF with high-resolution files from a PC, comes complete with a Li-ion battery that lasts 80 hours before recharging. Expect its appearance in early May.

Audio-head comments here

Alpha Design Labs brought along the yet unreleased X1 portable USB DAC and headphone amplifier.  This 24/192 asynchronous DAC is capable of translating the digital signal from an iDevice from either the traditional 30 pin or the new Lighting connection.  The DAC can also act as a USB to S/PDIF converter via the line out which doubles as a TOSLINK optical output.  ADL had the X1 paired with the new H118 closed-back headphone that should be released into the wild in the next few months.