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LHY Audio RPI Pro: Flagship Digital Streaming Bridge with CM4, SFP Fiber Isolation & OCXO Clock

LHY Audio RPI Pro: Flagship Digital Streaming Bridge with CM4, SFP Fiber Isolation & OCXO Clock

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The Reference Standard for Digital Streaming The LHY Audio RPI Pro is the flagship evolution of our streaming series, engineered... Read more

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$980.00 Excl. VAT

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    Description

    The Reference Standard for Digital Streaming

    The LHY Audio RPI Pro is the flagship evolution of our streaming series, engineered for audiophiles who demand zero compromise. By utilizing the industrial Raspberry Pi Compute Module 4 (CM4) instead of a standard Pi board, we’ve optimized the signal path, removed unnecessary components, and implemented true high-end isolation technologies.

    Advanced Engineering Highlights:

    • SFP Fiber Optic Input: The RPI Pro features a dedicated SFP port, allowing for a fiber optic network connection. This provides total galvanic isolation from network noise, effectively blocking EMI and RFI from your router or switch.

    • Compute Module 4 (CM4) Core: Built on the streamlined CM4 architecture, the RPI Pro offers a more stable and direct data path, significantly reducing electromagnetic interference compared to standard Raspberry Pi boards.

    • Ultra-Precision OCXO Clocking: Integrated with a top-tier SC-CUT Oven Controlled Crystal Oscillator, the RPI Pro re-clocks the digital signal to femtosecond precision, delivering a liquid, natural, and highly detailed soundstage.

    • Dual-Stage Linear Power Architecture: Equipped with a high-grade Talema transformer and dual independent LT3042 + PNP regulation circuits. The digital processing unit and the clock system are powered separately to prevent cross-contamination of noise.

    • Galvanic Isolated Output: The USB audio output is further filtered and isolated to ensure that the "dirty" power of the CPU never reaches your DAC.

    Technical Specifications:

    • Core Hardware: Raspberry Pi Compute Module 4 (4GB RAM / 32GB eMMC)

    • Network Input: SFP Fiber Optic Port + RJ45 Gigabit Ethernet

    • Power Supply: 30VA Talema Toroidal Transformer

    • Regulation Noise: $< 1uV$ (Dual Independent Rails)

    • Internal Clock: High-Stability SC-CUT OCXO

    • Clock Input: 10MHz BNC (Supports external synchronization)

    • USB Output: Dedicated Low-Noise USB 2.0 (Optimized for DACs)

    • OS Support: Roon Ready (RoPieee), Volumio, Moode, HQPlayer NAA.

    Technical Specifications/Raw Specs

    • Connectivity: SFP (Optical), RJ45, USB-A x2, BNC Clock In

    • Clock Frequency: 10MHz / 22.5792MHz / 24.576MHz Internal

    • Chassis: Full CNC Aluminum Shielding (Aviation Grade)

    • Input Voltage: 115V / 230V Manual Toggle

    • Cooling: Passive Silent Cooling (Chassis Heat Sink)

    • Dimensions: 220mm x 180mm x 60mm

    • Weight: 2.2kg

    Specifications

    • Weight: 200gr
    • Usage: Indoor & outdoor

    Pros and cons

    • Sustainably produced
    • Ideal for everyday use
    • May discolor in direct sunlight
    <h1><strong>Purity in Audio, Flexibility in Connection.</strong></h1>
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      The fuse can be replaced bycarefully prying open the fusecompartment.

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      1.25 Gbps SFP fiber module slot

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      HDMl video output interface.Can be connected to a display to view system status.

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      1.0 Gbps Ethernet port

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      Accepts a 50Q 10MHz externalclock signal

    Purity in Audio, Flexibility in Connection.

    <h2><strong>Core Powered by Raspberry Pi Compute Module 4</strong></h2>

      Core Powered by Raspberry Pi Compute Module 4

       Powered by the Raspberry Pi Compute Module 4, the RPI Pro is built for pure audio excellence. With Ropieee pre-installed, it offers exceptional sound and an intuitive user experience.

        Stream directly from your smartphone to your DAC—no Roon Core needed. Experience audio that outperforms Bluetooth and lets your music truly shine.

      Flexible Audio OS Choices:

      • 2x TF Cards Included:Ready-to-use with Ropieee or moode.
      • Easy Switch:Simply swap the TF card to change the system.
      <h2><strong>Flexible Audio OS Choices:</strong></h2>

      Built-in Ropieee Software Support:

      <h2><strong>Built-in Ropieee Software Support:</strong></h2>
      <h2><strong>Built-in High-Precision Clock System</strong></h2><h3>Ultra-Low Phase Noise</h3><h3></h3><h3>​<strong>Ultra-Low Noise OCXO:​</strong>​ Uses a high-precision SC-cut OCXO (Typ. -100dBc@1Hz) as the master clock.</h3><h3>​<strong>Synchronized Clocks:​</strong>​ A Skyworks PLL chip generates multiple synchronized clocks for the CM4, network, and USB chips.</h3><h3><strong>10MHz External Clock Input:​</strong>​ Features a BNC input for connecting an external master clock, with automatic switching.</h3>

        Built-in High-Precision Clock System

        Ultra-Low Phase Noise

        ​Ultra-Low Noise OCXO:​​ Uses a high-precision SC-cut OCXO (Typ. -100dBc@1Hz) as the master clock.

        ​Synchronized Clocks:​​ A Skyworks PLL chip generates multiple synchronized clocks for the CM4, network, and USB chips.

        10MHz External Clock Input:​​ Features a BNC input for connecting an external master clock, with automatic switching.

        <h1><strong>Native & Isolated USB Output</strong></h1><h3><strong>Direct from the CPU:​</strong>​ The USB audio signal comes natively from the CM4, ensuring a pure, unconverted data path.</h3><h3><strong>Galvanic Isolation:​</strong>​ A dedicated 3165 chip isolates the USB port, eliminating electrical noise from the source.</h3><h3></h3><h3><strong>Studio-Quality Playback:​</strong>​ Achieve flawless, stable transmission of high-res PCM/DSD for a true zero-compromise audio experience.</h3>

          Native & Isolated USB Output

          Direct from the CPU:​​ The USB audio signal comes natively from the CM4, ensuring a pure, unconverted data path.

          Galvanic Isolation:​​ A dedicated 3165 chip isolates the USB port, eliminating electrical noise from the source.

          Studio-Quality Playback:​​ Achieve flawless, stable transmission of high-res PCM/DSD for a true zero-compromise audio experience.

          Precision-Designed DC Power Supply

          High-Current Toroidal Transformer:​​ 30VA Talema core with multi-stage EMI filtering.

          Advanced Matrix Filtering:​​ Combines high-speed rectification with premium large-capacity capacitors.

          Three Independent Low-Noise Rails:​​ Dedicated μV-level DC-DC circuits for high-speed digital demands.

          <h1><strong>Precision-Designed DC Power Supply</strong></h1>

          Specifications

          Specification
          Parameters
          Hardware
          Raspberry Pi Compute Module 4 High Speed MicroSD TF 64G OXCO+ PLL Clock
          Software
          Pre-installed Ropieee + Moode OS | Volumio & PiCorePlayer support available on request
          Built-in OCXO
          Phase noise: -100dBc @ 1Hz offset (typ.) Frequency stability: ±0.3ppb Frequency accuracy: ±1ppm
          Clock Input
          BNC x1 (10MHz@50 ohms sine/square wave, 7-14dBm/0.5-1Vrms)
          Isolated USB 2.0 Audio
          PCM: 44.1KHz–768KHz/32Bit DSD: DSD64/128/256/512 (Native)
          Network Interfaces
          RJ45: Auto-negotiating 10/100/1000Mbps SFP: Supports copper/fiber modules, auto-negotiating 10/100/1000Mbps Note: RJ45 and SFP cannot be connected to the same LAN simultaneously
          Ground Lift Switch
          UP: Disconnects AC ground DOWN: Connects AC ground
          Grounding Terminal
          For dedicated external grounding
          Power Consumption
          Standby: 18W  Operation: 32W
          Chassis Type
          Solid Aluminum Alloy Machining
          Dimensions
          275 × 240 × 50mm (Width × Depth × Height)
          Tuning
          Weight
          5.5kg
          Fuse
          5×20 mm, T2.0AL (110–120VAC) 5×20 mm, T1.0AL (220–240VAC)
          Voltage
          110V-120V / 220V-240V
          Accessories
          Power cord, TF card ×2 ,Cat.6 Ethernet cable, Gloves

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