LHY Audio EFI Ethernet Filter

Product Description – LHY Audio EFI (Ethernet Filter with Optical Isolation)

Elevate your streaming rig with the EFI: a precision-engineered Ethernet filter designed to bring studio-level clarity to your hi-fi network. Built for serious listeners and reference-class systems, this unit tackles noise at its source - not just the signal.

Why it matters

• Optical isolation ensures complete galvanic separation between input and output, breaking ground loops and suppressing EMI/RFI contamination in your digital front-end.

• Dual ultra-low-noise LT3042 + PNP linear regulators power separate photo-electric conversion circuits, delivering ultra-quiet supply rails and guarding signal purity.

• A 10 Gigabit-rated isolated RJ45 network port underlines that this is designed for modern high-bitrate streaming—no compromises.

• Robust passive filtering: high-capacity capacitor matrix, dual high-current common-mode inductors, AC EMI mitigation—all housed in a machined aluminium alloy chassis.

In your system, you’ll notice

• A markedly quieter digital background: less hash, lower haze, so detail emerges with space.

• Stronger image focus and tighter timing thanks to cleaner network delivery.

• More room for your ampli

• fier, DAC, or streamer to breathe because the network link stops sabotaging performance.

• An upgrade that doesn’t shout new sound signature, but quietly unsnarls the existing one.

Specifications at a glance

• Dimensions: 150 × 175 × 50 mm; weight ~1.5 kg.

• Input: RJ45 (up to 10/100/1000 Mbps); Output: isolated

•  RJ45 10 Gb ready.

• Factory default power: 220-240 VAC.

• Recommendation for use
  A superb addition for streamer-based systems where the network is part of the signal chain (e.g., Roon endpoint, streamer, switch feeding a DAC). If you're chasing ultimate transparency and want to minimise network-induced noise, this is a meaningful upgrade.

What’s in the package:
1. LHY EFI
2. Power cord

Dimension: 150W x 50H x 175D (mm)

Weight: 1.5kg