« Prev | Next»

A4380 • 250W Public Address (PA) Power Amplifier


Cat. Page 57


  • $925.00
  • 2+ $835.00
  • Price per each
  • Includes GST


    Perth Low stock - Call to confirm
    Balcatta Low stock - Call to confirm
    Cannington Low stock - Call to confirm
    Midland Low stock - Call to confirm
    Myaree Low stock - Call to confirm
    Auburn In Stock
    Springvale In Stock
    Airport West Low stock - Call to confirm
    Virginia Low stock - Call to confirm
    Warehouse In Stock

Last updated 20-09-18 04:20:10

This product has been viewed 136 times.

  • Popular
  • Overview
  • Specifications
  • Downloads


This range of booster amplifiers are ideal for installations requiring high power zone amplifiers. Simply choose a power rating according to the wattage required for each zone. These high power models are ideal for use in shopping centres, pedestrian precincts, public transport facilities and convention centres. All models operate on 240V ac and 24V dc for battery backup operation. Input is via 3 pin balanced XLR (500mV). Level control is rear mounted to prevent tampering or accidental adjustment.

The circuit design includes protection features in case of output over voltage, over current and over temperature conditions. All are self resetting once the fault condition has been removed. Visual indication via front panel LEDs show amplifier status at all times. On demand fan cooling ensures reliable operation at all times. A dedicated nominal 24V dc 1A output is provided on the rear to power ancillary devices.


  • Multi-stage thermally cued fan cooling
  • Input signal presence indicator
  • Output peak limited
  • 2U 19" rack mount (ears included)
  • 3 pin XLR input
  • Level control rear mounted
  • 100V, 70V and 4 - 16Ω outputs
  • Thermal and overload protection
  • 240V ac, or 24V dc operation
  • 24V dc 1A output
  • 1A 24V Ancillary device power output

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: 250 Watt RMS
  • Distortion: < 0.5%, @ 1kHz
  • Frequency response: 50Hz - 15kHz, -3dB
  • Output line: 100V, 70V, or 4 - 16Ω
  • Input sensitivity: 500mV balanced
  • Signal to noise ratio: (peak limiting by-passed) > 90 dB
  • Line output: 600Ω balanced, 0dBV
  • Output connectors:
  • Audio: 3 pin XLR balanced
  • Speakers: Screw terminals
  • Trickle charge: Screw terminals
  • Input Connectors
  • Inputs: 3 pin XLR balanced
  • 24V-30V dc power: Screw terminals
  • 240V ac power: IEC power connector
  • Controls: Volume (on rear panel), On/off switch
  • Indicators:Mains, 24V dc, Power, Signal presence,Over temp, Over current, Shut down, Peak limiting
  • Current draw: 250mA Standby, 17A Full @ 24V dc
  • Power supply: 240V ac or 24V dc (nominal)
  • Dimensions: 483W x 340D x 88 mm
  • Weight: 19kg

*Specifications are subject to change without notice.

Thank you ! We have received your message.
Thank you ! We have received your message.