BA3240 - Public Address Amplifier


Public Address Amplifier

The Beta Three® BA3240 240W mixer amplifier is designed and engineered to suit public address installations where continuous high power is required. This versatile mixer amplifier can be used in a wide variety of public address applications. 


  • Six zone selector buttons on the front panel
  • Inputs 1-4 balanced microphone with 24V phantom power or line level
  • Front panel volume controls for each channel
  • Front panel treble and bass control
  • Front panel master volume control
  • LED 7 segment signal level indicator
  • Input 1 is priority mute channel, control all other channels
  • Rated voltage outputs on screw terminals 25V, 50V, 70V, 100V, 120v (rated impedance output 4ohm)
  • Monitor output 1W @ 8ohm optional
  • 24V DC interface
  • Protection for short circuit, over load, over heat


Rated Power

240W (RMS)
THD (@1kHz)<0.5% (Normal working condition)
Amplifier Type
S/N Ratio>70dB(mic), >80dB(circuit)
Mic input setting of channel INPUT 1- INPUT 410mV/1kΩ (balanced)
Line input setting of channel INPUT 1- INPUT 4200mV/30kΩ (balanced)
Damping Factor
Frequency Response (+0/-0.25dB)50Hz-16kHz
Tone Control>6dB @ 10kHz HF, >6dB @ 100Hz LF
Channel 5Input 200mV/50kΩ (unbalanced)
REC OUT/ImpedanceV/1kΩ
Input Impedance20kΩ Balanced, 10kΩ Unbalanced
Input connector
Output Connector
Power Supply110V/220V 50/60Hz
Dimensions (W x D x H)316mm (12.5”) x 88mm (3.5”) x 250mm (9.9”)
Packing Dimension (W x D x H)
Net Weight15.6kg (34.3lb)
Gross Weight16.4kg (36.1lb)

BA3240 Application

    BA3240 Installation

      BA3240 Parts

        BA3240 Collocation



            BA3240β3 BA3240 Datasheet 1.0BA3240  200KB 2022-01-24 10:21:31
            β3_BA3240_Chinese_Manualβ3_BA3240_Chinese_Manual 1β3_BA3240_Chinese_Manual  410.37KB 2018-07-12 02:25:39
            β3_BA3240_English_Manualβ3_BA3240_English_Manual 1β3_BA3240_English_Manual  180.56KB 2018-07-12 02:25:39