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A4020A • 30W 2 Input 100V Public Address (PA) Amplifier


Cat. Page 47


  • $295.00
  • 2+ $275.00
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  • Includes GST


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Last updated 17-08-18 10:20:10

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Designed to meet the requirements of small to medium sized professional public address installations, delivering an output power of 30W RMS. Frequency response extends from 40Hz to 10kHz at a total harmonic distortion (THD) of less than 0.5%. Output is 100V line only. This unit includes thermal overload shutdown, over current and short circuit protection. With one balanced microphone and two stereo line inputs, with recessed treble and bass controls, its perfect for simple installations requiring minimal inputs. VOX circuit on input 1 mutes input 2. Features variable sensitivity and time delay setting.


  • Balanced microphone input
  • Built in VOX muting circuit
  • Stereo line inputs
  • Bass and treble tone controls
  • 240V AC operation
  • Built in short circuit protection
  • Thermal shutdown circuit protection

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.


  • 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
  • Controls
  • 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
  • Muting
  • 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.

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