A Trio of USB DACs to Choose From: May 19, 2013 by hifiqc 0 2012-2013 Trending Audiophile USB DACs. Photo By Vahan Baladouni Small in size, big in sound. Audiophile USB DACs/headphone amps that made it through the Apartment Therapy Tech Test Lab: Meridian Explorer HRT microStreamer Audioquest Dragonfly