Asus Xonar Essence One DAC & Headphone Amplifier



Product Description

World’s first USB digital-to-analog converter with 8x symmetrical upsampling and 120dB SNR

  • Hi-Fi audio through the world’s first 8x symmetrical upsampling
  • Extreme audio clarity with 120dB SNR
  • Built-in headphone amp powers up even 600 ohms impedance headphones
  • 11 swappable OP-amps for customizable tonal characters
  • Cleanest sound thanks to a dedicated internal power supply


  • Audio Interface
  • Audio Performance
    Output Signal-to-Noise Ratio (A-Weighted) (Front-out) :
    120 dB
    Output THD+N at 1kHz (Front-out) :
    0.000316 %(-110 dB)
    Frequency Response (-3dB, 24bit/192KHz input) :
    10 Hz to 48 KHz
    Output/Input Full-Scale Voltage :
    Balanced Output : 4 Vrms ( Vp-p)
    Unbalanced Output : 2 Vrms ( Vp-p)
    Headphone : 7 Vrms ( Vp-p)
  • Chipset
    Audio Processor :C-Media CM6631 High-Definition Sound Processor
  • Sample Rate and Resolution
    Analog Playback Sample Rate and Resolution :
    44.1K/48K/88.2K/96K/176.4K/192KHz @ 16bit/24bit
    S/PDIF Digital Input :
    44.1K/48K/96K/192KHz @ 16bit/24bit
    ASIO 2.2 Driver Support :
    Hz @ with very low latency
    Upsampling capability :
    Up to 352.8 kHz (44.1K 88.2K 176.4KkHz input) or 384 kHz (48K/96K/192KkHz input), 32bit
  • Connectivity
    Analog Output
    1 x 6.3 mm jack (1/4″) Headphone out
    2 x RCA (Un-Balanced)
    2 x XLR (Balanced)
    2 x S/PDIF in (1 x Optical (Toslink)/1 x Coaxial)
  • Accessories
    Driver CD x 1
    6.3mm to 3.5mm stereo adapter x 1
    Audio Precision (AP) test report x 1
    User manual x 1
    USB cable x 1
    Power cord x 1
  • Dimensions
    261.33 x 230 x 60.65 mm ( L x W x H )
  • Note
    ●S/PDFI Receiver: AKM 4113
    ●DSP: ADI ADSP-21261
    ●D-A Converter for Analog Inputs: TI PCM1795
    ●Power Input Jack: IEC AC Inlet
    ●Volume controller: Balanced Output: Quad Units Taper B Potentiometer; Headphone Output: Quad Units Taper B Potentiometer
    ●Voltage Selector: AC 115V/223V Slide Switch

    Operational amplifier:
    Operational amplifier:
    ● Balanced/Un-balanced I/V:4 x NE 5532
    ● Balanced/ Un-balanced LFP: 2 x NE 5532
    ● Balanced /Un-balanced Buffer: 3 x LM4562NA
    ● Headphone: 2 x LME49600

    ●Crystal clock: 12MHz For USB; 24.576MHz For S/PDIF
    ●Oscillator: 45.1584MHz (for 44.1KHz sample rate); 49.152MHz (For 48KHz sample rate)

    LED Indicator:
    ●One color LED: Ø3mm Lamp LED Blue color
    ●2 color LED: Ø3mm Lamp LED Multi color(Blue and Red)

    MAC OS X support:
    The Essence One supports Mac OS X 10.8 or later version without any driver needed.


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