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RDL EZ-HK3 – Stereo Audio and Composite Video Hum Killer

Regular price $190.47 Sale price $142.85
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RDL  |  SKU: EZ-HK3

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What is the RDL EZ-HK3?

The RDL EZ-HK3 is a transformer isolation module that eliminates ground-loop hum in both stereo audio and composite video. It installs between an unbalanced A/V source and a grounded amplifier and display.

How does it work?

RDL EZ-HK3 Audio Video Ground Loop Isolator

Stereo audio and 75 Ω composite video connect on gold-plated RCA jacks. Each input shield is isolated from the case and output ground, and a rear-panel ground-lift switch lifts both the audio and video output grounds. Audio runs at -10 dBV nominal and 10 kΩ with 20 Hz to 20 kHz (±1 dB) response, and video bandwidth is 40 Hz to more than 5 MHz, all at unity gain. The 1/6 rack width case mounts in the EZ-CC6 component chassis or EZ-RA6 rack adapter.

What are the key features?

  • Audio and video isolation — One module breaks ground loops on stereo audio and composite video together.
  • Gold-plated RCA jacks — Input and output connectors match consumer A/V sources.
  • Ground-lift switch — One switch lifts both audio and video output grounds.
  • Passive unity gain — No power is needed and signal levels are unchanged.
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