$455.00 per ea

Quantity Price
ea $455.00
2+ $399.00
per ea
All prices shown are (inc. GST)


The Redback® A 4422 4 channel mixer has been designed to meet the requirements of professional public address installations. It is ideally suited for use in shopping centres, gymnasiums, places of worship, court rooms etc.

Inputs and Outputs
The A 4422 is a 4 channel mixer with all inputs configurable for Balanced Mic or Line level input. The line level inputs are dual RCA’s with DIP switch adjustable input sensitivity, and are internally mixed to give a mono signal. The balanced mic inputs are connected via 3 way euro blocks and have DIP switch selectable input sensitivity and selectable phantom power of 15V DC . A 1V balanced output is provided via euro blocks.

Front Panel Controls
The front panel includes individual volume controls and tamper proof, screw driver adjust, treble and bass controls for each input channel.

Priority and Muting
There are two levels of priority/VOX muting. Inputs 1 and 2 will operate the priority/VOX muting regardless of the input configuration. (ie: both the microphone and line inputs will operate the priority/VOX circuit if this function is selected “ON” for that input). This is particularly useful when an input is set for line use, as it enables telephone paging, radio
microphones, emergency tones or similar to mute background music on other inputs.

The priorities operate as follows.
Input 1: Priority 1 - mutes inputs 2-4
Input 2: Priority 2 - mutes inputs 3-4
Adjustable VOX muting sensitivity

The VOX muting on inputs 1 and 2 have adjustable sensitivities which are adjusted via the trimpots on the front panel.


  • 4 inputs.
  • Individual treble and bass for each channel.
  • All mic inputs are balanced via 3 pin screw terminal blocks.
  • All auxiliary inputs use dual RCA sockets.
  • Adjustable VOX sensitivity.
  • Record out socket dual RCA.
  • Selectable input priority.
  • Selectable phantom power.
  • Selectable mic or auxiliary mute function.
  • 24V DC input.
  • Includes Power Supply

Rack Mounting
To mount any of the Redback half rack products into a 19" wide racking system, the H 4990 bracket is required. If a single product is mounted into the H 4990, then a metal (H 4992) or plastic (H 4993) infill panel can be fitted for a neater finish.

100% developed, designed & assembled in Australia.
Since 1976 Redback PA products have been manufactured in Perth, Western Australia by Altronics. With over 40 years experience in the commercial audio industry, we offer consultants, installers and end users reliable products of high build quality with local product support. Read more about our Australian Made products

Backed by an industry leading 10 Year Manufacturer Warranty.
Our Redback products have a long tried and tested history of bulletproof reliability. Altronics offers a 10 Year Warranty on all Australian Made Redback products. Our local in-house service department has all the know how to answer technical queries and provide timely service. Read more about our industry leading warranty.

Information & Downloads


  • Inputs: 3 pin euro blocks or 2 x RCA
  • 24V DC power: 2.1mm DC Jack
  • 24V DC power: Screw terminals
  • Mic inputs: 30Hz - 15kHz, -3dB
  • Line inputs: 30Hz - 23kHz, -3dB
  • Mic inputs: 3mV/100mV balanced
  • Line inputs: 100mV/1V
  • Balanced Out: Screw terminals
  • Dimensions: 103D x 210W x 38Hmm
    • *Specifications are subject to change without notice.

Warranty & Returns


We offer 10 years warranty on this product from its date of purchase. This is available from Altronics stores, online purchases or Altronics resellers. In accordance with our full warranty terms we will repair, replace or refund if goods you have purchased from us are defective.


Not withstanding our warranty policy, if you are dissatisfied with our goods or service you may return the goods within 14 days of our despatch date. Simply contact us for a return authorisation number and we will refund your purchase in full, less transport costs on receipt of goods. All returned goods must be in as sold condition including all packaging, instructions, invoices etc.