ASUS Announces Xonar U3 Plus External DAC with Headphones Amp

ASUS today announced the Xonar U3 Plus, a pocket-sized USB-powered sound card with a 150-ohm headphone amplifier, studio-grade vocal effects and a full suite of audio enhancements. The Xonar U3 Plus is designed for PC and notebook users who are looking for an easy-to-use solution that caters to their high-fidelity audio playback and home recording needs.


Xonar U3 Plus has a high-performance headphone amplifier with adjustable gain levels that can drive up to 150ohm-impedance headphones and headsets. It enhances treble and bass to add dynamic details to low and high frequency sounds like explosions and footsteps in movies or games.


Studio-grade effects and specially-tuned audio
The pocket-sized Xonar U3 Plus supports real-time microphone audio recording, with a digital signal processor (DSP) that provides extremely-low microphone latency. Xonar U3 Plus features a suite of studio-grade vocal effects including a dedicated 10-band equalizer, precision low- and high-frequency filters, as well as reverb adjustment to add a sense of environmental space.

Stereo Mix allows users to mix vocals and music tracks easily, while the DJ Mix tool features a ducking effect that automatically reduces (‘ducks’) the volume of a background audio track when vocals are present, allowing users to create professional-sounding podcasts.

Xonar U3 Plus also features five pre-set audio modes (Rock, Rock Pro, Ballad, Ballad Pro, and Special) that have been specially-tuned and calibrated by Xonar engineers, so users hear their favorite tunes in the way they were intended to be heard.

– Signal-to-Noise Ratio (SNR): 100dB
– Total Harmonic Distortion + Noise : 0.005% (-110dB)
– Frequency response: 20Hz to 20kHz
– Headphone impedance: Optimized for 32~150Ω
– Interface: USB 1.1 or above bus compatible
– Sample Rate and Resolution: Up to 48KHz @ 16bit
– Connectivity: 1 x 3.5 mm jack analog out; 1 x 3.5 mm jack (Line-In/Mic-In combo); 1 x S/PDIF out (combo with analog out)
– Operation system: 1/8/7/XP(32/64bit)
– Karaoke functions: Music pitch-shifting, vocal cancellation, and microphone echo effects with stereo mix recording (Wave and Mic-in) for online Karaoke or online DJ applications

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