AV-HK1 - Rdl Hum Killer; Transformer | Aztek Computers
29+Years
SKU: RDB4L4SQEG |  Mfg. Part: AV-HK1  | UPC: 813721013569  | 
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AV-HK1 - Rdl Hum Killer; Transformer

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$145.73  $196.74
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Product Overview

Hum Killer; Transformer isolated dual phono jacks to ground-referenced dual phono jacks

Expert Overview

The RDL AV-HK1 is a stereo transformer isolation module designed for unbalanced, high-impedance audio inputs. It addresses hum and ground loop issues by providing electrical isolation between an audio source and a grounded amplifier or mixer. This module is suitable for IT professionals and businesses integrating consumer audio products, such as computers, CD players, or cassette players, into professional audio systems. Input and output connections are facilitated via gold-plated phono jacks. The input shield is isolated from the case and output ground, while the output shield connects to the case shield, ensuring effective hum elimination. The AV-HK1 includes two adapter cables for compatibility with mini-plug and jack connections, enhancing its versatility for various audio sources. Its robust design supports both portable applications and fixed installations, with a mounting bracket provided for permanent setups. This unit helps maintain audio signal integrity in challenging grounding environments.

Technical Specifications

The AV-HK1 is a stereo transformer isolation module for use with unbalanced, high impedance audio inputs. Input and output connections are provided on gold-plated phono jacks. The AV-HK1 is supplied with two adapter cables to facilitate connecting with products that use mini-plugs and 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. The user audio source, such as a computer, CD player, cassette player or other consumer audio product, connects to the AV-HK1 INPUT. The OUTPUT should be connected to the input of the grounded amplifier or mixer in the audio system.

Input and output jacks are oriented left (L) and right (R) when the user is facing each end panel. The correct channel orientation is indicated on the front panel of the module.

The AV-HK1 is a rugged product designed for portable use. For fixed installations, a mounting bracket is included. Many consumer audio inputs and outputs use stereo mini-plugs and jacks. The AV-HK1 includes two adapter cables to interface with these products. The cable kits are also available separately from RDL in the event a cable becomes worn or lost.

Product Details

  • Manufacturer:
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  • UPC:
  • Condition:
  • Weight:
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  • Updated:
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  • Country of Origin:
  • RDL
  • AV-HK1
  • 813721013569
  • New
  • 1.1 lbs
  • 9 X 6 X 9
  • Jul 27, 2026
  • Dec 30, 2025
  • United States
Product Identifiers: Brand: Rdl • Part #: AV-HK1 • UPC: 813721013569 • Category: Signal Processors/Rack Effects

Frequently Asked Questions

What type of audio connections does the AV-HK1 support?

The AV-HK1 features gold-plated phono jacks for both input and output connections. It also includes two adapter cables to facilitate connections with products that use stereo mini-plugs and jacks.

What is included with the AV-HK1?

The AV-HK1 comes with two adapter cables for mini-plug/jack compatibility and a mounting bracket for fixed installations. The module itself provides transformer isolation for stereo audio.

When should I use the RDL AV-HK1?

You should use the AV-HK1 when connecting an unbalanced, high-impedance audio source, such as a computer or consumer audio player, to a grounded amplifier or mixer. It is designed to eliminate hum and ground loop noise in such setups.

How does the AV-HK1 address ground loop issues?

The AV-HK1 utilizes transformer isolation. The shield connection of each input jack is electrically isolated from the case and output ground, while the output shield connects to the case shield, effectively breaking ground loops and eliminating hum.

AV-HK1 - Rdl Hum Killer; Transformer

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$145.73