Redback 30W 2 Input 100V Public Address (PA) Amplifier (A4022)


A 4022

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The Redback 30W PA Amplifier is designed for small to medium-sized professional public address installations, delivering powerful and clear audio with 30W RMS output. Ideal for simple setups, this amplifier features one balanced microphone input and two stereo line inputs, making it perfect for environments requiring minimal inputs. The recessed treble and bass controls allow for easy audio customization to suit various settings.




  • 30W RMS Output: Delivers robust audio suitable for small to medium installations.
  • Balanced Microphone Input: Ensures high-quality sound for speech and announcements.
  • Stereo Line Inputs: Provides flexibility for connecting various audio sources.
  • VOX Muting Circuit: Input 1 automatically mutes input 2, ideal for prioritizing announcements.
  • Tone Controls: Recessed treble and bass controls for easy audio adjustments.
  • Frequency Response: Extends from 40Hz to 10kHz with less than 0.5% total harmonic distortion (THD) for clear, distortion-free sound.
  • 100V Line Output: Suitable for long-distance audio distribution in large areas.
  • 240V AC Operation: Reliable and stable power source for consistent performance.
  • Variable Sensitivity and Time Delay Setting: Customizable settings for optimal audio performance.


  • Power output: 30 watts RMS
  • Distortion: < 0.5% @ 1kHz
  • Output line: 100V


Signal to Noise Ratio

  • All volume controls min, typically 72dB below rated output.
  • All inputs display same S/N ratio.


Frequency Response

  • Mic: 52Hz - 10kHz, -3dB
  • Line: 40Hz - 10kHz, -3dB


Input Sensitivity

  • Mic input: 2.6mV balanced
  • Line inputs: 150mV



  • Volume 1: Controls mic 1 / line 1
  • Volume 2:. Controls line 2
  • Bass: ±10dB @ 100Hz
  • Treble: ±13dB @ 10kHz
  • Power: On/off switch


Output Connectors

  • Speakers: Screw terminals



  • VOX only (-79dB)


Input Connectors

  • Mic input: 3 pin XLR balanced
  • Line inputs: RCA stereo socket, bridged mono
  • 240V AC power: IEC power connector
  • Power supply: 240V AC
  • Indicators: Power
  • Fuse protection: 1A AC
  • 1.5A x 2 DC internal
  • Size: 300W x 220D x 74H mm
  • Weight: ≈4.8kg
  • Colour: Black


*Specifications are subject to change without notice.

Redback 30W 2 Input 100V Public Address (PA) Amplifier (A4022)

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Australian owned since 1980


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