The Biamp MA240 is a 240W single-channel mixing amplifier designed for commercial audio systems that require paging, background music, emergency override, and flexible input routing. It combines a 240W Class-D amplifier with multiple microphone, line-level, paging, and emergency inputs in a single rack-mountable chassis.
The MA240 supports both 70V/100V distributed audio systems and low-impedance loads down to 4Ω, making it suitable for a variety of commercial sound installations. Its four-level priority system allows emergency announcements and paging signals to automatically take priority over program audio.
Flexible Audio Mixing and Priority Routing
The MA240 provides several input options for combining paging, microphones, and background music.
Inputs include:
- 1 emergency line-level input with contact closure
- 1 paging microphone input with contact closure and chime
- 2 balanced microphone/line inputs
- 4 unbalanced stereo line inputs, internally mono-summed
- Four levels of input priority
The emergency input includes a mute-all override, allowing emergency announcements to take priority over other connected audio sources. The paging input also provides contact closure and a selectable chime function for paging applications.
240W Commercial Mixing Amplifier
The MA240 delivers 240W RMS output at 1% THD and provides both constant-voltage and low-impedance operation.
Output Configuration
- 240W RMS output
- 280W dynamic power
- 70V operation
- 100V operation
- Low-impedance operation
- 4Ω minimum operational load
- Class-D amplifier topology
Built-in protection includes temperature, overcurrent, overvoltage, and undervoltage protection.
Ideal for Paging and Background Music
The combination of multiple input types and priority routing makes the Biamp MA240 particularly useful when a commercial audio system needs both everyday music playback and priority announcements.
Typical applications include:
- Commercial paging systems
- Background music systems
- Retail stores
- Conference rooms
- Houses of worship
- Education facilities
- Corporate facilities
- Restaurants and hospitality
- Emergency announcement systems
The MA240 can handle background music through its stereo line inputs while allowing paging and emergency sources to override the program audio when required.
Paging Microphone with Chime and Contact Closure
The dedicated paging microphone input provides contact-activated paging and a built-in 2-second chime. This makes it practical for installations where users need a simple way to initiate announcements without manually adjusting the amplifier's program sources.
The paging microphone input accepts a balanced microphone signal and provides +48V phantom power for compatible microphones.
Front Panel Controls and Monitoring
The MA240 provides straightforward controls for day-to-day system operation, including:
- Music level control
- Microphone controls
- Chime control
- Tone control
- VOX mute
- Wall-panel control capability
Front-panel indicators provide visual feedback for signal presence, clipping, overload, emergency mode, paging activity, and VOX operation.
Fanless Design for Quiet Installations
The fanless design allows the MA240 to operate without the noise associated with conventional fan-cooled amplifiers. This can be especially useful in environments where the amplifier is installed close to occupants, such as conference rooms, offices, classrooms, and worship spaces.
Biamp MA240 Specifications
| Specification | Detail |
|---|
| Amplifier Type | Class-D mixing amplifier |
| Output Channels | 1 |
| RMS Output Power | 240W @ 1% THD |
| Dynamic Power | 280W |
| Constant Voltage | 70V / 100V |
| Low Impedance | Yes |
| Minimum Load | 4Ω |
| Emergency Input | 1, line level with contact closure |
| Paging Mic Input | 1, microphone level with contact closure |
| Mic/Line Inputs | 2 balanced |
| Stereo Line Inputs | 4 unbalanced, mono-summed |
| Input Priority | 4 levels |
| Paging Chime | 2 seconds |
| Phantom Power | +48VDC |
| Pre-Out | 0 dBV nominal |
| Protection | Temperature, overcurrent, overvoltage, undervoltage |
| Dimensions | 19"W × 3.5"H × 11.8"D |
| Weight | 13.2 lb |
| Operating Temperature | 32–95°F (0–35°C) |
| Humidity | 0–95% RH, non-condensing |
| Certifications | FCC Part 15B, UL, CE, RoHS |
The specifications above are based on the product information provided in the current page.
Why Choose the Biamp MA240?
The MA240 is designed for installations where one amplifier needs to handle more than simply powering speakers. Its combination of 240W output, 70V/100V and low-impedance operation, paging, emergency override, multiple microphone and line inputs, and four-level priority routing allows it to serve as the central amplifier and audio mixer for a commercial sound system.
Why Buy from Audio Supply?
Audio Supply can help you select compatible Biamp amplifiers, paging microphones, speakers, and other commercial audio equipment for your installation. If you're building a 70V/100V paging or background music system, our team can help you determine the appropriate amplifier and speaker configuration.
