** Asus Xonar Essence ONE, Worlds first USB (Universal Serial Bus) External Soundcard & digital-to-Analogue converter with 8x symmetrical up-sampling & 120d B SNR.** The Xonar Essence One is a high-end USB (Universal Serial Bus) DAC with the worlds first 8x symmetrical upsampling, an extremely high 120 d B SNR, audiophile class headphone AMP with a full op-amps swappable function. With most modern audio signals stored in digital format, the ASUS Xonar team has catered to user needs & launched its first hi-fidelity USB (Universal Serial Bus) digital-to-analogue converter (DAC), the Xonar Essence One. It is an industry-leading high-end USB (Universal Serial Bus) DAC with the worlds first 8x symmetrical up-sampling technology. The Xonar Essence One also features a 120d B signal-to-noise ratio (SNR), audiophile-class headphone AMP & an eleven operational amplifier (op-amp) design for distinct tonal customisation. Whilst the majority of common up-sampling USB (Universal Serial Bus) DACs indistinguishably transfer various audio sources to 192k Hz, the Xonar Essence One up-samples 44.1/88.2/176.4k Hz input to 352.8k Hz & 48/96/192k Hz input to 384k Hz symmetrically (Note: 44.1*8=352.8k Hz; 48*8=384k Hz). As a result, data volume is also increased by up-sampling the bit-rate to 32bit, corresponding to the original content & faithfully preserving the details of the users music collection. The average SNR of other USB (Universal Serial Bus) DACs is about 110d B, but with at an extremely high 120d B SNR, the Xonar Essence One provides audio fanatics with clearer sounds, enabling minute sound details to be heard while significantly reducing noise levels. A dedicated power supply ensures that clean power is delivered so the sharpest sound is heard, with excellent immunity to noise from the AC line. The Xonar Essence One features a fully swappable op-amp design, unprecedented for a high-end USB (Universal Serial Bus) DAC. An op-amp is a vital part of a DAC that amplifies the analogue signal & affects tonal characteristics of the overall sound image. The Xonar Essence One allows the user to swap every op-amp that is