Precision Audio and AV Interface Products

Radio Design Labs

EZ-HK1 Stereo Audio Hum Killer

  • Audio Ground-Loop Hum Elimination
  • Unbalanced Stereo Galvanic Isolation
  • Inputs and Outputs on RCA and Mini Jacks
  • Switch-Selectable Ground Lift for Output Jacks
  • Portable Use or Permanent Installation
  • Gold-Plated RCA Connectors
  • Conversion between Mini-jack and RCA formats
  • Ground-Lift Switch
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

The EZ‑HK1 is a superior-quality stereo audio transformer isolation module for use with unbalanced, high impedance audio inputs. Input and output connections are provided on gold-plated RCA jacks.

The shield connection of each INPUT jack is electrically isolated from the case and from the output ground. The shield connection of each OUTPUT jack is connected to the case shield through a rear-panel ground-lift switch.

The EZ-HK1 eliminates hum due to ground loops when it 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.

Applications

Inputs (2):
Stereo on RCA Phono jacks, Stereo Mini-jack, -10 dBV nominal, ground-isolated
Input Impedance:
10 kΩ
Outputs (2):
Stereo on RCA Phono jacks, Stereo Mini-jack, -10 dBV nominal
Output Impedance:
10 kΩ
Output Ground Isolation:
Switch-selectable
Gain:
Unity nominal (passive circuit)
Frequency Response:
20 Hz to 20 kHz (± 1 dB)
Total Harmonic Distortion:
<0.05% (1 kHz)
Crosstalk:
<-75 dB (20 Hz to 10 kHz), <-65 dB (10 kHz to 20 kHz)
Case dimensions:
2.9” (7.4 cm)W x 3” (7.6 cm)D
Mounting size:
1/6 rack width
Package Type:
Cardboard Box
Package Dimensions:
3.625 x 4.625 x 2.125 in.
Shipping Weight:
0.4 lbs.
WEEE weight:
0.255 lbs.
Tariff code:
8543.70.9860

Documents:
Format
PDF
CAD Files:
Format
High Res Images:
Format
Declaration of Conformity:
Format
PDF

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EZ SERIES

RDL EZ Series products provide the highest level of value to A/V professionals and A/V users who demand professional quality. Based on decades of industry-leading technology in professional A/V and installed sound and video, EZ products capitalize on RDL´s renowned automated manufacturing to yield unsurpassed value. EZ products are a step up from other industry manufacturers´ utility modules, and are a leap up from consumer-grade products.

The EZ series offers unparalleled flexibility. Each unit is fully labeled on the front and rear for use either as a finished product or as a utility module. Installation of multiple products is quick and easy using the comprehensive range of EZ rack mounts, chassis, bezels, drawers and accessories. High quality full-size switches, long life controls, quality connectors, solid-state audio and video switching, gold plating and superior engineering combine to make EZ the best value in the industry. EZ products are attractive, reliable, packed with features and are simple to install and operate. When long-term performance, quality and value matter, the choice is EZ.

EZ products are made in the USA by RDL, the inventor of application-specific modules bringing decades of experience as the world´s leading manufacturer of high-reliability performance products to the A/V industry. EZ SERIES modules are designed and manufactured in the U.S.A.

EZ-HK1 EZ-HK1