Ceiling Microphone MAS-A100

A hands-free lecture capture and presentation solution
Image of the following product: Ceiling Microphone MAS-A100


Beamforming ceiling microphone with advanced speech reinforcement technology—enabling truly hands-free lectures and presentations

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.

Our comprehensive solution employs audio volume stabilization and clear audio processing to produce sharp recordings. The MAS-A100 has two channel outputs. The dual-output channel enables speech reinforcement and recording simultaneously. The dedicated rec channel records with a wider capture range and optimal intelligibility—perfect for lecture capture.

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. With simple settings, central management and no need to monitor battery use, MAS-A100 is a convenient classroom audio solution.

*A loudspeaker system is required for speech reinforcement


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 suppressing unwanted feedback (howling).

Noise reduction

Our Beamforming Microphone incorporates advanced noise-reduction technologies to minimize 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.

Automatic gain control

The MAS-A100 has a useful inbuilt volume normalization 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.

Automatic calibration

The Beamforming Microphone optimizes 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. This calibration is required only on initial installation, minimizing time-consuming set-up and system maintenance.

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.

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.

Status LED

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


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


Cable requirements
Cat5e UTP or higher
Frequency response
100-10,000 Hz *
0dBFS/Pa at 1 kHz*
Maximum SPL
Signal to noise ratio
75 dB (A-weighted, 1 kHz, 1 Pa)*
Under 24 ms (not including Dante latency)
Self noise
19dBSPL (A-weighted)*
Dynamic range
75 dB*
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: 24 dB
Maximum feedback reduction: 32 dB
Mic gain (output volume): -60 dB to +12 dB
Capture range: Narrow / standard / wide
Feedback reduction: Low/middle/high
Noise reduction: Low/middle/high
Noise gate: Off/low/middle/high
Equalizer: Fixed 5-band, ±12 dB (1 dB Step)
Connector type
Power requirements
Power over Ethernet (PoE), Class 0
Power consumption
13 W, maximum 9 W @25°C, typical
Approx. 2 lb 3.2 oz (1 kg) (main unit only)
Approx. 2 lb 14 oz (1.3 kg) (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