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🎉 Pre-order the Silent Angel LF-SP LAN Filter before July 31, 2026, to enjoy a special pre-order price of $3,300 (Original price: $3,890), plus a free Silent Angel C7150 (1.5M) LAN Cable (Value: $380). Stocks will be available in 2 - 4 weeks. Limited quantity, while stocks last. 🎉
LF-SP
Passive LAN Filter for Cleaner, Stable 2.5GbE HiFi streaming
Reduce Noise for Purer Streaming Performance
Passive HiFi LAN Filter designed for modern HiFi streaming systems. Built for 2.5GbE network environments, it helps reduce unwanted noise, improve isolation, and optimizes signal transmission for cleaner and more stable performance across critical audio network.
- 2.5GbE Ready for HiFi Networking
- Power-Free, Low-Noise Design
- High Isolation, Low Interference
Stability and Purity for 2.5GbE HiFi Networks
Designed for 2.5GbE and Gigabit Networks
Supports both 2.5GbE and Gigabit networks for wider device compatibility.
Zero-Noise Passive Operation
Passive, power-free design to avoid added noise and keep installation simple.
Galvanic Ground Isolation
Reduces transferred noise and ground-loop interference between connected devices.
EMI Noise Elimination
Eliminates electromagnetic interference for a cleaner and more stable audio network.
Ultra-Low Noise Transmission
Reduce loss and crosstalk for more stable, reliable signal delivery.
Pitch-Black Audio
Creates a quieter background for greater clarity, focus, and musical detail.
Shielded Connectivity for Flexible Audio Integration
Features dual connectors and a fully shielded interface, allowing easy deployment between the router and audio switch to reduce network-side noise before it enters the dedicated audio chain.
Simple plug-and-play design also allows flexible placement between the audio switch and streamer, where it helps further refine LAN signal quality and preserve cleaner signal transmission before playback.
A Cleaner Foundation for Modern HiFi Streaming
Ready for the 2.5GbE Era
LF-SP Passive LAN Filter is designed for 2.5GbE home routers and modern HiFi streaming systems, with greater headroom for future network upgrades.
Passive by Design, Free from Added Noise
With no external power required, LF-SP avoids added power noise while keeping installation simple and direct.
Isolate Noise at the Source
Placed between the router and audio switch, LF-SP helps block noise and interference from the home network side.
Optimize the Final Signal Path
Placed between the switch and streamer, LF-SP further refines LAN signal quality before it reaches the playback device.
A Quieter Listening Experience
Enhanced isolation and shielding reduce ground-loop and EMI noise, creating a Pitch-Black Audio Background with greater clarity and detail.
Compact Design, Essential Upgrade
With its space-saving design, LF-SP brings a more stable and cleaner network foundation to modern streaming systems.

Specification
Interface Type: Dual RJ45 female connectors
Data transfer rate: 2500/1000/100/10 Mbps (Auto-negotiating 2.5 Gigabit Ethernet)
Ethernet support: CAT5/CAT6/CAT7/CAT8 Standard Network Cables
Interface Type: Fully shielded modular interface
Insulation performance: Insulation withstand voltage: 1500 Vrms, leakage current ≤ 0.5 mA, sustained for 60 seconds
Insertion loss: 1-50MHz≤-0.5dB; 50-125MHz≤-1.0dB
Return loss: 1-125MHz≥-15dB
Near-End Crosstalk (NEXT): 1-40MHz≥-35dB; 40-125MHz≥-35+15log10(f/40)dB
Far-end crosstalk (FEXT): 1-100MHz≥43-20log10(f/100)dB
Sound tuning: High-end audio-grade sound optimization
Power Requirements: No external power source required
Dimensions: 108x32x26mm
Operating temperature range: 0~+85°C
Storage temperature range: 0~+85°C
Operating and Storage Humidity: 10%~90%