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Instructions Brochure


Designed in conjunction with Australia


  • VU meter on LCD screen
  • Output peak limited
  • Multi-stage thermally cued fan cooling
  • 2U 19" rack mount
  • Tape record out terminals
  • Remote volume facility
  • Optional alert, evac & chime tone generator (A 4573)
  • Vox activated 24V dc output
  • 6 inputs with 3 pin XLR or 2 x RCA sockets
  • Phantom powering available on all inputs
  • Three levels of priority
  • Option for mic/line to operate vox muting on inputs 1 to 3
  • Push to talk (PTT) terminals on rear panel
  • Bass and treble tone controls
  • Power amp line out connector
  • Terminals for 100V line, 70V line and 4 - 16Ω loads
  • 240V ac or 24V dc power operation
  • Thermal & fuse overload protection
  • Built in short circuit protection
  • 300mA trickle charge facility for 24V dc batteries
  • Master volume can be configured as pre or post line out

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


  • Power Outputs
  • 125 watts RMS
  • Distortion: < 0.5%, @ 1kHz
  • Output line: 70V, 100V or 4 - 16Ω
  • Line output: 600Ω balanced, 0dBV
  • Frequency Response
  • Mic inputs: 50Hz - 12kHz, -3dB
  • Line inputs: 50Hz - 15kHz, -3dB
  • Sensitivity
  • Mic inputs: 3mV balanced
  • Line inputs: 100mV-1V
  • Signal To Noise Ratio (Limiting by-passed)
  • Mic inputs: > 75dB below rated output
  • Line inputs: > 81dB below rated output
  • Output Connectors
  • Speakers: Screw terminals
  • Line out: 3 pin XLR, Tape out RCA / send & return RCA
  • Input Connectors
  • Inputs: 3 pin XLR balanced or 2 x RCA
  • 24V dc power: Screw terminals
  • 240V ac power: IEC power connector
  • Muting: PTT via microphone switch contacts or VOX muting
  • Controls
  • Mic inputs: Volume
  • Line inputs: Volume
  • Bass:
    • *Specifications are subject to change without notice.