RDL EZ-HK3 Audio/Video Hum Killer

RDL EZ-HK3 Audio/Video Hum Killer

RDL EZ-HK3 Audio/Video Hum Killer

RDL EZ-HK3 Audio/Video Hum Killer

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Expected availability: 3-7 business days

Product Highlights

  • A/V Ground-Loop Hum Elimination
  • Composite Video Galvanic Isolation
  • Unbalanced Stereo Galvanic Isolation
  • Input & Output RCA Jacks
  • Switch-Selectable Ground Lift for Output
  • Portable Use or Permanent Installation
  • Gold-Plated Connectors
  • Excellent Video Frequency Response
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RDL EZ-HK3 overview

  • 1Description

The RDL EZ-HK3 Audio/Video Hum Killer is a high-quality video transformer isolation module. It's designed specifically for use with unbalanced high-impedance audio inputs and 75-Ohm composite video. The device features both input and output connections on gold-plated RCA jacks. Each input jack is electrically isolated from the case itself as well as from the output ground. Each output jack is connected to the rear panel ground-lift switch, which is designed to eliminate hum due to ground loops. Ground loops are common when the EZ-HK3 is installed between a video source, such as a computer or DVD player, and the input of a grounded video monitor or projector in an AV or video system.

Key Features

Composite Video Input
Connect the video output from the audio/video source to the composite video input RCA jack
Stereo Audio Inputs
Connect the audio output from the audio/video source to the RCA jacks
Composite Video Output
Connect the video output to the A/V system or equipment video input
Stereo Audio Outputs
Connect the audio outputs to the A/V system or equipment audio input
Ground-Lift Switch
The audio and video output cable shields are connected to the EZ-HK3 chassis when the switch is in the NORM position. In the unlikely event that the EZ-HK3 chassis is mounted to equipment with a different ground from the equipment the EZ-HK3 output is feeding, a ground loop could be produced. This ground loop is eliminated by setting the switch to the LIFT position


Audio and video ground-loop hum elimination
Unbalanced stereo galvanic isolation
75-Ohm composite video galvanic isolation
Portable use or permanent installation
Input and output RCA jacks
Excellent low and high video frequency response
Gold-plated connectors
UPC: 813721010681
In the Box
RDL EZ-HK3 Audio/Video Hum Killer
  • 4 x Rubber Feet
  • Set of Mounting Screws
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description

    RDL EZ-HK3 specs

    Video Output Composite Video (1 V p-p nominal)
    Output Impedance Video: 75 Ohms
    Audio: 10 kOhms
    Video Bandwidth 40 Hz to > 5 MHz
    Audio Input Stereo on RCA Phono jacks (-10 dBV nominal, ground-isolated)
    Audio Input Impedance 10 kOhms
    Audio Output Stereo on RCA Phono jacks, -10 dBV nominal
    Audio Frequency Response 20 Hz - 20 kHz (±1 dB)
    Total Harmonic Distortion (THD) < 0.05% (1 kHz)
    Crosstalk Channel to Channel: < -75 dB (20 Hz - 10 kHz) / < -65 dB (10 kHz to 20 kHz)
    Video to Audio: < -80 dB (referred to -10 dBV)
    Audio to Video: < -85 dB (referred to 1 V p-p)
    Output Isolation Output Ground Isolation: Switch-selectable (lifts audio and video grounds)
    Gain Audio/Video: Unity nominal (passive circuit)
    Mounting Size 1/6 rack width
    Dimensions (WxD) 2.9 x 3.0" / 7.4 x 7.6 cm
    Weight Not specified by manufacturer
    Packaging Info
    Package Weight 0.45 lb
    Box Dimensions (LxWxH) 4.8 x 4.3 x 2.2"

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