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 Manual：Download

Specifications

• Weight: 200gr
• Usage: Indoor & outdoor

Pros and cons

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