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LHY Audio AS8 Pro: Flagship Audiophile Network Switch with OCXO Clock & SFP Fiber Isolation

LHY Audio AS8 Pro: Flagship Audiophile Network Switch with OCXO Clock & SFP Fiber Isolation

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The Ultimate Foundation for High-End Digital Streaming The LHY Audio AS8 Pro is a reference-grade network switch designed for audiophiles... Read more

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    Description

    The Ultimate Foundation for High-End Digital Streaming

    The LHY Audio AS8 Pro is a reference-grade network switch designed for audiophiles who demand the absolute purest data transmission. Standard network switches are a major source of electrical noise and timing errors; the AS8 Pro acts as a high-fidelity firewall, purifying the network signal before it reaches your Streamer, Roon Core, or DAC.

    Key Technical Highlights:

    • Elite SC-CUT OCXO Clock: At the heart of the AS8 Pro is a hand-selected SC-CUT Oven Controlled Crystal Oscillator. This provides a reference clock with near-zero jitter, ensuring that the digital timing of your stream is perfectly preserved for a more natural, analog-like soundstage.

    • Galvanic SFP Fiber Isolation: Featuring a dedicated SFP port, the AS8 Pro allows for a fiber optic connection. This physically breaks the electrical path between your noisy router and your audio system, effectively blocking 100% of electromagnetic interference (EMI).

    • Dual-Stage Linear Power System: Powered by a premium Talema toroidal transformer and multiple LT3042 + PNP ultra-low noise regulators ($<1\mu V$). Independent power rails ensure the clock and network chips operate in a silent, noise-free environment.

    • 8-Port High-Speed Connectivity: Equipped with 7 shielded Gigabit RJ45 ports and 1 SFP port. Each port is optimized for high-bandwidth, low-latency audio data.

    • External 10MHz Clock Input: Includes a BNC port to support external master clocks (like the LHY OCK-2). This allows for a unified clocking environment across your entire digital chain.

    Technical Specifications:

    • Network Interface: 7 x RJ45 Gigabit Ethernet + 1 x SFP Fiber Port

    • Clock Type: Internal SC-CUT OCXO (High Stability Reference)

    • Clock Input: 10.0MHz BNC (50/75 Ohm Auto-matching)

    • Power Supply: Integrated Linear Power (Talema Transformer)

    • Noise Floor: $< 1uV$ (Microvolt Level)

    • Chassis: Full CNC-machined Aerospace Aluminum

    • Voltage: 110-120V / 220-240V (User Switchable)

    • The 2.5G main and 1G audio zones are
      connected via internal single-mode fiber with optoelectronic isolation, delivering the purest network for digital streaming.
    • Features an SC-cut OCXO (-110dBc close-in phase noise) with PLL clock chip, providing precise synchronous clocking for both zones. Includes clock I/O ports for upgrades.
    • Equipped with dual 50VA Talema toroidal transformers and multi-channel μV-level linear DC power supplies.
    • CNC-machined from solid aviation aluminum to reduce resonance and enhance rigidity. Circuits are isolated to prevent interference.

      Main Data Switching Zone
      • 1* 10Gbps SFP/SFP+ port
      • 4* 2.5Gbps RJ-45 ports

      Audio Isolated Zone
      • 1* 1.25G SFP port
      • 2* 1.0G RJ45 ports

      Clock Zone
      • Clock Output AC Coupling:
      BNC ×1 (10MHz @ 50Ω square wave, 7dBm / 0.5Vrms)
      • Clock Input AC Coupling:
      BNC ×1 (10MHz @ 50Ω sine/square wave, 7–14dBm / 0.5–1Vrms)

      Built-in OCXO
      • Phase Noise (Close-in): -110 dBc @ 1 Hz Offset (Typical)
      • Frequency Stability: < ±5 ppb
      • Frequency Accuracy: < ±0.05 ppm


      Grounding
      • 4mm Ground Terminal ×1
      • Ground Mode Switch (Float or Grounded)

      What’s in the Box

      • AS8 Pro Audiophile Ethernet Switch
      • Generic Power Cord 
      • LAN cable 1.5M

      AC Voltage
      Factory set to 220-240VAC (or can be configured to 110-120VAC)

      Power Consumption
      18W (Standby) / 32W (Full Load)

      Fuse
      5 x 20 mm T2.0AL(110~120VAC)
      5 x 20 mm T1.0AL(220~240VAC)

      Dimensions & Weight

      • Dimensions: 400mm (W) × 55mm (H) × 260mm (D)
      • Weight: 5.5 kg
      • User ManualDownload

    Specifications

    • Weight: 200gr
    • Usage: Indoor & outdoor

    Pros and cons

    • Sustainably produced
    • Ideal for everyday use
    • May discolor in direct sunlight

    CNC-Machined Full Aluminum Hollowed-Out Chassis

      The luxurious CNC-machined solid aluminum alloy chassis features a hollowed-out design,  with circuits for different functions separated. Both in aesthetics and structure ,it elevates performance by reducing interference and mechanical resonance to a new level

    <h1><strong>Innovative Design for Purer Audio Quality</strong></h1>
    • Read moreRead more

      Three LT3045Regulators Secondary regulation supplying power to the 1G isolation zone

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      Noratel Porcupine Transformers

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      Six LT3042+ PNPPrimary Regulators Primary regulation delivering uV-grade power to the 2.5Gmain zone, 1Gisolation zone, andclock board

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      High-Speed Rectification andFultering Array

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      EMl AC Filtering

    Innovative Design for Purer Audio Quality

    Bill of Materials

    1. Integrated aluminum alloy CNC-machined hollowed-out chassis

    2. Two imported 50VA Block Ring Transformers

    3. Swiss Gotham internal connecting wires

    4. Two communication-grade single-mode modules / Corning customized fiber optic cables

    5. Six branded PULSE 10G RJ45 connectors

    6. Four-layer gold-sinking PCB (Printed Circuit Board)

    7. Branded SC-Cut OCXO crystals, each manually tested and selected

    8. Premium capacitors from Nichicon, Rubycon, WIMA, Panasonic, and other renowned brands

    9. Over 10 groups of LT company μV-level LDO linear voltage regulator chips

    <h1><strong>Built-in Ultra-Low Noise High-Precision Clock Function</strong></h1><h3><strong>High performance, low-loss</strong></h3><h3><strong>Rigorously tested and precision-selected</strong></h3><h3><strong>Ultra-low noise</strong></h3><h3><strong>1Hz Frequency Offset: -110 dBc</strong></h3>

      Built-in Ultra-Low Noise High-Precision Clock Function

      High performance, low-loss

      Rigorously tested and precision-selected

      Ultra-low noise

      1Hz Frequency Offset: -110 dBc

      <h1><strong>Built-in Optical Isolation</strong></h1><h4>The 2.5G main switching zone and 1G audio silent isolation zone are connected and communicate via built-in single-mode dual fibers, achieving opto-electronic isolation to provide the purest network environment for digital streaming.</h4>

        Built-in Optical Isolation

        The 2.5G main switching zone and 1G audio silent isolation zone are connected and communicate via built-in single-mode dual fibers, achieving opto-electronic isolation to provide the purest network environment for digital streaming.

        <h1><strong>Dual Imported Toroidal Tranformers for Independent Power supply</strong></h1><h4>  To isolate power interference and prevent cross-system “interference”, the AS8 Pro employs two Multicomp audiophile grade “Porcupine” toroidal transformers,  providing dedicated power channels for the clock system and the switch. This ensures the 10MHz master clock and all clock distribution modules operate enhancing clock precision. It delivers robust and stable power to modules such as the 2.5G/1G main controllers, SFP optical ports, and isolation zones.</h4>

          Dual Imported Toroidal Tranformers for Independent Power supply

            To isolate power interference and prevent cross-system “interference”, the AS8 Pro employs two Multicomp audiophile grade “Porcupine” toroidal transformers,  providing dedicated power channels for the clock system and the switch. This ensures the 10MHz master clock and all clock distribution modules operate enhancing clock precision. It delivers robust and stable power to modules such as the 2.5G/1G main controllers, SFP optical ports, and isolation zones.

          <h1><strong>Gold-Plated Grounding Terminal</strong></h1><h4>  The AS8 Pro is equipped with a dedicated grounding terminal and grounding control switch, designed to provide flexible and pristine grounding management. This minimizes AC ground loop interference and ground noise, significantly enhacing overall audio performance.</h4><h4>  The groudning terminal allows the device to be independently grounded, effectively isolated from the AC power ground (mains ground), When connected to a dedicated ground network or high quality audio ground, it prevents high-frequency interference,voltage fluctuations, and ground loop noise typically introduced bt traditional AC grounding,greatly improving background silence and the audio system’s detail reproduction capabilities.</h4>

            Gold-Plated Grounding Terminal

              The AS8 Pro is equipped with a dedicated grounding terminal and grounding control switch, designed to provide flexible and pristine grounding management. This minimizes AC ground loop interference and ground noise, significantly enhacing overall audio performance.

              The groudning terminal allows the device to be independently grounded, effectively isolated from the AC power ground (mains ground), When connected to a dedicated ground network or high quality audio ground, it prevents high-frequency interference,voltage fluctuations, and ground loop noise typically introduced bt traditional AC grounding,greatly improving background silence and the audio system’s detail reproduction capabilities.

            Connection Diagram

            <p><strong>Connection Diagram</strong></p>

            Specification

            <p><strong>Specification</strong></p>

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            Manual

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