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 4 10mV/1kΩ (balanced)
Line input setting of channel INPUT 1- INPUT 4 200mV/30kΩ (balanced)
Damping Factor
Frequency Response (+0/-0.25dB) 50Hz-16kHz
Tone Control >6dB @ 10kHz HF, >6dB @ 100Hz LF
Channel 5 Input 200mV/50kΩ (unbalanced)
REC OUT/Impedance V/1kΩ
Input Impedance 20kΩ Balanced, 10kΩ Unbalanced
Input connector
Output Connector
Power Supply 110V/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 Weight 15.6kg (34.3lb)
Gross Weight 16.4kg (36.1lb)
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