Biamp MA240 240W Single-Channel Mixing Amplifier – Powerful, Reliable Audio Control
The Biamp MA240 is a robust 240-watt single-channel mixing amplifier engineered for professional audio environments requiring high performance and intuitive control. Designed for simplicity and versatility, the MA240 features front panel volume and microphone controls with clear visual feedback to streamline system operation.
Equipped with four priority levels for audio routing, including an emergency input with mute-all functionality, paging microphone input with contact closure and chime, two mic/line inputs, and four mono-summed stereo line inputs, the MA240 offers unmatched flexibility. Its fanless design ensures silent operation, making it ideal for conference rooms, houses of worship, retail spaces, and background music systems.
Key Features
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240W single-channel continuous power output
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Four priority levels for audio routing including emergency and paging inputs
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Four stereo line inputs, mono summed for flexibility
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Dedicated emergency input with mute-all override switch
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Paging microphone input with contact closure and chime
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Intuitive front and rear panel controls for ease of use
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Fanless design for silent operation
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5-year manufacturer’s warranty
Biamp MA240 Specifications
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GENERAL
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Height
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3.5 inches (89 mm)
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Width
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19 inches (483 mm)
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Depth
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11.8 inches (300 mm)
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Weight
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13.2 lbs (6.0 kg)
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ENVIRONMENTAL
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Ambient Operating Temperature Range
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32 - 95° F (0 – 35° C)
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Humidity
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0-95% relative humidity (non-condensing)
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Altitude
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0-6,600 ft (0-2000m) MSL
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CONTROLS & INDICATORS
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Control
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Chime: Yes
Tone Control: Yes
Wall Panel Controls: Yes
VOX Mute: Yes
Music Level Control: Yes
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Front Panel Indicator(s)
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Front Panel Indicators: Signal present, clipping, overload condition, emergency mode active, paging active, VOX active
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AMPLIFIER
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AUDIO
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Microphone
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Paging Mic
Nominal Input Sensitivity (Bal. Mic): -45 dBV (5.6 mVrms)
THD+N (Pre-Out, @ -6dB): < 0.4%
Frequency Response (-3dB):
Balanced Mic: 165 Hz – 20 kHz
Unbalanced, Balanced Line: 20 Hz – 20 kHz
Gain: -15 to +15 dB
Chime Length: 2 sec
Input Impedance: 2 kΩ
Mic A, B
Nominal Input Sensitivity:
Balanced Mic: -45 dBV (5.6 mVrms)
Balanced Line: -12 dBV (250 mVrms)
Unbalanced Line: -12 dBV (250 mVrms)
THD+N (Pre-Out, @ -6dB): < 0.2%
Frequency Response (-3dB):
Balanced Mic: 165 Hz – 20 kHz
Unbalanced, Balanced Line: 20 Hz – 20 kHz
Phantom Power (balanced only): +48VDC (7mA/input)
VOX Attenuation (Mic A, B, Inputs 1-4): 30 dB
Input Impedance: 2 kΩ
Inputs 1-4
Nominal Input Sensitivity (Unbal. Line): -12 dBV (250 mVrms)
THD+N (Pre-Out, @ -6dB): < 0.1%
Frequency Response (-3dB): 20 Hz – 20 kHz
Input Impedance: 10 kΩ
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Input Type
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INPUTS
Number of Inputs
Emergency (line level with contact): 1
Paging Mic (mic level with contact): 1
Mic/Line (balanced): 2
Stereo Line (unbalanced): 4
Input Priority Levels: 4
Priority Input Contact: Yes
Emergency Input
Nominal Input Sensitivity: 0 dBV (1 Vrms)
THD+N (Pre-Out, @ -6dB): < 0.5%
Frequency Response (-3dB): 45 Hz – 20 kHz
Input Impedance: 5 kΩ
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Impedance
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5 kΩ
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Maximum Output
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Number of Output Channels: 1 Output Connectors: 4-pin, 0.3 inch (7.6 mm) Euroblock 70V/100V Mode: Yes Low Impedance Mode: Yes
Priority Output Contact: Yes
Minimum Operational Load: 4Ω
Amplifier
Topology: Class D
RMS Output Power (1% THD): 240 W
Dynamic Power: 280 W
SNR (1% THD): > 90 dB
THD+N (@ -6dB): < 0.5%
Protection: Temperature, overcurrent,
overvoltage, undervoltage
Priority Output
Voltage: 24V
Max Current: 0.5A
Pre-Out
Nominal Output Level: 0 dBV
Standby
Wakeup Sensitivity:
Inputs 1-4: -43 dBV (6 mVrms ± 10%)
Mic A, B (RCA): -50 dBV (5 mVrms ± 10%)
Mic A, B (Balanced, VOX off): -74 dBV (0.3 mVrms ± 10%)
Time to Auto Standby: 10 min
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COMPLIANCE
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Certifications
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FCC Part 15B (USA)
UL listed (USA and Canada)
CE Marked (Europe)
RoHS Directive (Europe)
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