• Intro

    uLink Asynchronous USB Converter

    Reclock the digital signal from your computer and connect to your DAC

    • Ultra-Low Phase-Noise Clocks
    • USB Powered, Internal Regulation
    • Operate at 16- or 24-bits at 44.1, 48, 88.2, 96, 176.4 and 192kHz
    • Proprietary 500MHz DSP Core
    • MAC USB 2.0 compatibility and custom Windows USB 2.0 driver
  • Features

    uLink Asynchronous USB Converter Features

    Asynchronous USB
    With a true Asynchronous interface our Ultra Low Noise Femtosecond Master Clocks control the output jitter from the computer source. This provides the lowest noise digital source for the system DAC and unprecedented sonic transparency from any source file.

    Galvanic Isolation on Outputs
    The ULink provides galvanic isolation from the USB born noise through the transformer coupled SPDIF output or the high speed ST fiber output.

  • Specs

    uLink Asynchronous USB Converter Specifications

    uLink Core Technology

    Proprietary 500MHz DSP Asynchronous USB Core
    Dual Ultra-Low Phase-Noise Clocks
    Galvanic isolation


    Input: High Speed USB type-B receptacle
    Output: Coaxial SPDIF on BNC 75Ω, LightLink ST Fiber
    Dual Ultra-Low Phase-Noise Clocks: Jitter <70Femtoseconds RMS, 100Hz-1MHz
    Supported sampling rates: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
    Supported word lengths: up to 24-bit


    Native MAC USB 2.0 compatible on OSX 10.6 and later
    Custom Windows USB 2.0 driver Win 7, Win 8, and XP
    Driver appears as Bel Canto uLinkUSB2.0 select as default playback


    Power Usage On: 1W
    Power Usage Off: 0W
    Power Requirement: USB Bus 5VDC
    Dimensions: 4" W x 4.75" D x 1.2" H (103mm x 120mm x 30mm)
    Weight: 1 lbs (0.45kg)

    BNC/RCA adapter and USB cable included.

    Features and specifications are subject to improvements and changes without prior notice.

  • Reviews

    uLink Asynchronous USB Converter Reviews

    Computer Audiophile, April 2013

    "Computer audiophiles seeking great performance without financial hardship should include the uLink on a small list of great converters with unique features, great design, and great sound quality. I highly recommend the Bel Canto uLink USB to S/PDIF converter and award it a place on the [Computer Audiophile Suggested Hardware] List without hesitation."
    Sound Stage! HiFi, Sathyan Sundaram, March 2014

    "For those with DACs lacking USB inputs, the uLink provides an easy and musical way of adding computer-based audio to a system. More important, as an asynchronous USB converter, it improves performance at the lower and more common sample rates of 44.1, 48, 88.2, and 96kHz in clearly audible ways, reducing noise and thus increasing clarity. It’s perhaps surprising that sending signals through an additional step and an additional box full of circuitry can provide superior sound..."