Line Noise BlackHole

The Line Noise BlackHole (LNBH) is a compact, plug-and-play EMI/RFI sink filter designed to passively clean up noisy AC lines. No current limitation, no sonic compression—just quieter backgrounds and more revealing sound.

The Power Noise Problem

Power lines today carry more than voltage—they carry noise. Routers, chargers, appliances, and dimmers inject electromagnetic interference into the AC line. This affects the transparency, dynamics, and clarity of your audio system.

How the BlackHole Works

The Line Noise BlackHole (LNBH) connects in series to your circuit and absorbs high-frequency EMI/RFI through a computer-optimized 5th order Chebyshev filter network that achieves >50dB attenuation of noise above 100kHz.  

Because it is a series-filter, it is very effective at scrubbing out noise, like a black hole -- the noise goes in, but it doesn't come out. It can provide up to 10A of current for your devices and it will filter out high frequency noise from switch mode power supplies and other noise sources to make the "blacks even blacker"

No Power Restriction, All Gain

Plug the LNBH in between the wall plug and your system and it cleans the entire line downstream.

Plug the LNBH into any unused wall or power strip outlet on the same circuit as your system. It cleans the entire line—without restricting current flow to your components.

Real-World Results You Can Hear

When installed correctly, it's designed to deliver:

• Lower background noise
• Sharper imaging
• Improved microdetail and texture
• A more natural, relaxed sound

It doesn’t color the sound. It clears the path.

Technical Specs and Safety

• Voltage Range: 85–230V AC / 10A
• Certifications: CE / FCC / RoHS / REACH
• Construction: IEC inlet + fused switch + NEMA outlet
• LED Indicator: Green glow confirms power is active

Safe for most HiFi systems, not suitable for medical equipment or high-leakage circuits.

Set It and Forget It

Once plugged in, the Line Noise BlackHole works silently in the background. Add more units across your home for cumulative noise reduction. It's the easiest upgrade you'll ever hear.

The Line Noise BlackHole is designed in the USA and assembled in China using only premium-quality components.