RDL EZ-HK1 Stereo Audio Hum Killer

RDL EZ-HK1 Stereo Audio Hum Killer

RDL EZ-HK1 Stereo Audio Hum Killer

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Product Highlights

  • Gold-Plated RCA Connectors
  • Audio Ground-Loop Hum Elimination
  • Unbalanced Stereo Galvanic Isolation
  • Inputs & Outputs on RCA & Mini Jacks
  • Switch-Selectable Ground Lift for Output
  • Portable Use or Permanent Installation
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RDL EZ-HK1 overview

  • 1Description

The RDL EZ-HK1 Stereo Audio Hum Killer is a stereo audio transformer isolation module. It's designed specifically for use with unbalanced, high-impedance audio inputs. 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-HK1 is installed between an unbalanced audio source (such as a computer, CD player, cassette player or other consumer audio product) and the input of a grounded amplifier in an audio system.

Key Features

Stereo Audio Inputs
Connect the output from an audio source to the RCA jacks or to the stereo mini-jack
Stereo Audio Outputs
Connect one of the EZ-HK1 outputs to the amplifier or system audio input
Ground-Lift Switch
The audio output cable shields are connected to the EZ-HK1 chassis when the switch is in the NORM position. In the unlikely event that the EZ-HK1 chassis is mounted to equipment with a different ground from the equipment the EZ-HK1 output is feeding, a ground loop could be produced. This ground loop is eliminated by setting the switch to the LIFT position


Audio ground-loop hum elimination
Conversion between mini-jack and RCA formats
Unbalanced stereo galvanic isolation
Portable use or permanent installation
UPC: 813721010643
In the Box
RDL EZ-HK1 Stereo Audio Hum Killer
  • 4 x Rubber Feet
  • Set of Mounting Screws
  • 3-Year Warranty
  • Table of Contents
    • 1Description

    RDL EZ-HK1 specs

    Inputs Stereo RCA Phono Jacks / Stereo Mini Jack (-10 dBV nominal, ground-isolated)
    Input Impedance 10 kohms
    Outputs Stereo RCA Phono Jacks / Stereo Mini Jack (-10 dBV nominal)
    Output Impedance 10 kohms
    Output Isolation Switch-Selectable
    Gain Unity Nominal (passive circuit)
    Frequency Response 20Hz - 20kHz (±1.0dB)
    Total Harmonic Distortion (THD) <0.05% (1.0kHz)
    Crosstalk <-75dB (20Hz - 10kHz) / <-65dB (10 - 20kHz)
    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 0.4 lb
    Box Dimensions (LxWxH) 4.9 x 4.3 x 2.3"

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