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A4420B • 8 Channel Public Address (PA) Mixer


Cat. Page 71


  • $495.00
  • 2+ $440.00
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  • Includes GST


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Last updated 18-04-19 02:20:12

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Developed after extensive consultation with Australian pro sound contractors, this 8 channel mixer incorporates a variety of practical features ensuring suitability for a wide scope of PA and sound reinforcement applications. Features include: selectable phantom power for electret/condenser type microphones on each input, optional vox muting of line programs, bass and treble controls (microphone channels can be routed through tone controls or bypassed as desired), individual level controls for each channel input together with master level control. A 600 Ohm/0dBm XLR balanced line output is provided enabling bridged output connection to up to 16 power amplifiers, including the Redback Phase 4 range.


  • 6 microphone and 2 line inputs
  • All mic inputs are 3 pin XLR balanced
  • Line inputs via twin RCA sockets
  • Separate bass and treble tone controls
  • Individual input and master volume controls
  • Optional VOX muting of line inputs
  • Optional phantom power for each mic input
  • Microphone bass cut internally selectable
  • Mic inputs routed via tone controls or bypassed
  • 24VDC input

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.


  • Auxiliary
  • No. of Channels: 2
  • Sensitivity (master full): 260mV
  • Signal to Noise Ratio: better than 76dB
  • Frequency Response (±3dB): 60Hz - 20kHz
  • Input Impedance: 100k Ohm
  • Muting Level: -50dB
  • Mode: Unbalanced
  • Connector Type: Stereo RCA
  • Tone Control
  • Bass Control: ±9dB at 80Hz
  • Treble Control: ±10dB at 10kHz
  • Bass Cut Switch on Microphone
  • Switch “ON”: -6dB/Octave from 150Hz
  • Phantom Power
  • Voltage: 12V
  • Output Impedance: 3.4k ohm
  • Microphone
  • No. of Channels: 6
  • Sensitivity (master full): 1.2mV
  • Signal to Noise Ratio: better than 71dB
  • Frequency Response (±3dB): 60Hz to 20kHz
  • Input Impedance: 600 Ohm
  • Mic Impedance: 200 - 600 Ohm nominal
  • Mode: Balanced
  • Connector Type: 3 Pin XLR Female
  • Output
  • Signal to Noise Ratio :
  • (all controls mid way) -85dB, ref 0dBm
  • (all controls maximum) -58dB, ref 0dBm
  • Impedance: 600 Ohms
  • Distortion: Less than 0.06%
  • Max Output Level: +19dBm
  • Mode: Balanced
  • Connector Type: 3 Pin XLR Male
  • *Specifications subject to change without notice.

*Specifications are subject to change without notice.

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