Features clear 120dB SNR and asynchronous USB audio with a 600 ohm headphone amplifier and swappable Op-Amps. Available for SGD$599 @ Cybermind and Ban Leong Technologies Online Store.
The ASUS Xonar Essence STU USB DAC and headphone amplifier inherits and improves on the audio quality of Xonar Essence ST/STX sound cards.