Ceiling Microphone MAS-A100

A product photo of Beamforming Microphone showing the product face-on

Introducing Sony’s beamforming ceiling microphone with advanced speech reinforcement technology – enabling truly hands-free and contactless lectures and presentations.

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Contactless, hands-free ceiling beamforming microphone with speech reinforcement capability

The MAS-A100 is a state-of-the-art speech reinforcement* and recording solution. Attaching and positioning lavalier microphones is time-consuming, and handheld microphones restrict movement. However, the Beamforming Microphone is simply affixed to the ceiling, then ready to use – leaving the orator location-free, hassle-free and hands-free to focus on presenting. And what’s more, operation is totally contactless, reducing risk of infection for users.

*Loud speaker system is required for speech reinforcement

A graphic showing a teacher delivering a lecturer to a socially-distanced classroom of students. His hands are free as the Beamforming Microphone is amplifying his voice through loudspeakers mounted to the wall so that all the students can hear him clearly.

Dedicated channels for speech reinforcement and recording

Our comprehensive solution employs audio volume stabilisation and clear audio processing to produce sharp recordings.

The MAS-A100 has two channel outputs. The main channel provides speech reinforcement in a classroom environment, while the dedicated rec channel records with a wider capture range and optimal intelligibility – perfect for lecture capture and remote learning*.

The dual output channel enables true hybrid learning by providing speech reinforcement in the classroom, and recording for remote learning simultaneously, to create a true hybrid learning solution.

*Lecture capture system required
**Pre-testing recommended for remote learning applications.

A lecturer speaking to a classroom of students. He is standing in front of a screen displaying a powerpoint presentation. Two Beamforming Microphones are mounted to the ceiling. The students appear interested and engaged

Simple installation and management

Supporting Dante and PoE, MAS-A100 links with third-party systems via a single cable connection. Auto-calibration streamlines system configuration, and settings can easily be adjusted via the network using free MASM-1 management software. Permanent ceiling installation ensures hands-free and contactless operation. And with simple settings, central management and no need to monitor battery use, MAS-A100 is a convenient classroom audio solution.

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Beamforming and Intelligent Feedback Reducer

The integration of beamforming technology and our market-leading Intelligent Feedback Reducer produces clear audio with hands-free speech reinforcement, leaving the presenter hands-free. Sony’s high-performance digital signal processing and unique algorithms extract speech sound while supressing unwanted feedback (howling). 

A diagram showing how Beamforming Microphone's feedback reducer works. We see how the teacher's voice is captured by the microphone and sent to the loudspeakers. The sound from the loudspeaker goes back to the microphone but is cancelled out, elimintating the feedback

Noise reduction

Our Ceiling Microphone incorporates advanced noise reduction technologies to minimise ambient noise. Stationary background noise arising from projectors and air conditioning are automatically detected and reduced to achieve clear sound resulting in better intelligibility and, ultimately, better understanding for listeners.

In addition to this, the Ambient Noise Filter* feature automatically detects and filters out intermittent and distracting sounds, such as the typing of a keyboard, click of a mouse or the turning of pages. (Version 1.1)

*The Ambient Noise Filter feature is scheduled to be available in March 2021

A diagram showing how Beamforming Microphone's noise reduction feature works. We see how only the teacher's voice is captured by the microphone and sent to the loudspeakers, but not the noise of the air conditioning or the sounds from the teacher's laptop. The speaker is smart enough to filter out this ambient noise.

Automatic gain control

The MAS-A100 has a useful inbuilt volume normalisation feature to maintain stable volume regardless of the distance between the presenter and the microphone, leaving the presenter free to move around the space without the audio quality deteriorating. Automatic gain control adjusts the strength of the signal received to ensure clear and consistent sound for easy listening.

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Automatic calibration

The Beamforming Microphone optimises the parameters of audio processing for speech reinforcement automatically. The microphone generates a test signal, which is captured by the loud speakers. The system then calculates and configures the parameters for speech reinforcement. This calibration is required only on initial installation, minimising time-consuming set-up and system maintenance.

  1. Generate test signal
  2. Capture test signal from loud speakers
  3. Calculate and configure optimal parameters for speech reinforcement
A diagram showing how Automatic Calibration works. Beamforming Microphone sends a test signal to the speakers which is picked up by the microphone. The microphone then adjust its parameters based on this test signal

Hear the difference for yourself

Performance Test 1

Listen to how the Beamforming Ceiling Microphone performs — and the difference the Beamforming technology makes — in a standard classroom setup.

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Performance Test 2

Compare the performance when users are wearing masks.

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Microphone Array System Manager (free download)

Our comprehensive solution includes free Microphone Array System Manager software (MASM-1). The software supports installation and configuration of initial settings, as well as monitoring, operations and firmware management. MASM-1 is a total management solution, enabling users to manage multiple microphones in multiple locations centrally and easily via the local network.

Find out more about MASM-1 >

A diagram denoting how the Microphone Array System Manager (MASM-1) supports multiple classrooms. Three classrooms are shown linked to the software

System setup

Whether you’re integrating into a Dante audio system or an existing analogue system, Beamforming Ceiling Microphone provides simple integration with minimal fuss. You can also calculate how many microphones you need to deliver seamless lectures with our online configurator tool, which calculates the dimensions of your room to provide the optimum setup.

Configure your room >

A diagram showing the calculator for Beamforming Microphone
A diagram showing a typical Beamforming Microphone setup connected to a Dante audio system. The microphones are connected to a PoE switch which sends the signal to a Dante mixer. The mixers outputs two signals: the recording channel is sent to a lecturer capture recorder. The second signal is sent to an amplifier to the loudspeakers on the main channel
A diagram showing a typical Beamforming Microphone setup connected to an analogue audio system. The microphones are connected to a PoE switch and on to a Dante to analogue converter which converts the signal to analogue. The signal is then sent to the mixer which outputs two signals: the recording channel is sent to a lecturer capture recorder. The second signal is sent to an amplifier to the loudspeakers on the main channel

Additional features

Bass Boost

Enhance audio quality for clear and easy listening with adjustable levels of bass boost. (Version 1.1)

Scheduled to be available in March 2021

Icon representing the Bass Boost feature.

Dante®and PoE compatibility

The MAS-A100 is compatible with third-party Dante mixers, converters and other devices, as well as power over ethernet (PoE). There’s no complicated wiring – a single cable can connect the microphone to the system.

An icon showing a network cable

Status LED

The microphone has an inbuilt status LED, enabling both instructor and operator to easily recognise the microphone status.

An icon of the Beamforming Microphone


Our Beamforming Ceiling Microphone can be operated by API, permitting simple external control and customisation as well as linking with existing systems.

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Watch the webinar

Discover more about the user benefits and features of the MAS-A100 Beamforming Ceiling Microphone.

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Cable requirements
Cat5e UTP or higher
Frequency response
100-10,000 Hz *
0dBFS/Pa at 1kHz*
Maximum SPL
Signal to noise ratio
75dB (A-weighted, 1kHz, 1Pa) *
Under 24ms (Not including Dante latency)
Self noise
19dBSPL (A-weighted) *
Dynamic range
75dB *
Dante digital output
Channel count: 2 channels(Main, Rec) with Dante
Sampling rate: 48 kHz
Bit depth: 24
Audio interface: Dante, AES67
Digital Signal Processing
Audio technologies
Feedback reducer
Automatic gain control
Noise reduction
Noise gate
Automatic calibration with test signal
API for external control system
Maximum noise reduction: 24dB
Maximum feedback reduction: 32dB
Mic gain (output volume): -60dB ~ +12dB
Capture range: Narrow / standard / wide
Feedback reduction: Low/ middle / high
Noise reduction: Low / middle / high
Noise gate: Off / low / middle / high
Equaliser: Fixed 5-band, ±12dB (1dB Step)
Connector type
Power requirements
Power over Ethernet (PoE), Class 0
Power consumption
13W, maximum 9W@25°C, typical
Approx. 1kg (2lb 3.2oz) (main unit only)
Approx. 1.3kg (2lb 14oz) (with ceiling bracket)
Φ: Approx. 240 mm (9 1/2 inch)
Height: Approx. 50 mm (2 inch)
Control browser (MAS-A100)
Google Chrome
Operating temperature range
Operating humidity
20% to 80% (no condensation allowed)
Storage temperature
-20 °С to +60 °С (-4 °F to 140 °F)
Storage humidity
20% to 80% (no condensation allowed)
Supplied accessories
Ceiling bracket (1)
Safety regulations (3)
Template (1)
Not including signal processing