Quattro3 USB and Power Daisy Chain (MT304) – EOL


The Quattro3 (Q3) USB is a high-quality conference speakerphone that will turn any room into a professional conference room. It has an exceptionally large pickup and broadcasting range, yet is small in size and discrete in design. The Quattro3 utilizes multiple microphones, a uniquely designed speaker, and a powerful DSP to achieve commanding performance. The Quattro3 MT304 model connects to any computer and allows you the option to power daisy chain Quattro3 units via one power source without the need of another interface.

The Quattro3 MT304 is an ideal USB solution for:

  • Large locations that require a daisy chain link but have only one power source
  • Quattro3 ceiling mount installations
  • Small offices or home offices
  • Small to very large conference rooms
  • Classrooms and training rooms

Four microphone beamforming array, Full duplex communication, Echo cancelling, Noise suppression, De‐reverb, Automatic gain control, Daisy chainable, Single source daisy chain powering, Interchangeable interface modules, Durable aluminum casing, LED lit control buttons


USB cable

Daisy chain cable (Ethernet) 6 Feet in Length

Interchangeable wire slot cover

User manual

Warranty: 2 years

The Quattro3 model MT304 connects via:

USB to your computer ‐ this connection is for any session using your computer, such as Voice Over IP applications (Vidyo, BlueJeans, FuzeBox, Skype, Microsoft Lync, etc.).



UBS interface (mini B connector)

3.5mm external loudspeaker and microphone jack

Volume Up / Volume Down buttons

Daisy chain expandability of up to 15 units

Power consumption: 5V 500mA peak through USB and wall mount AC/DC converted.


Frequency response 50Hz – 16 KHz

Low latency (10ms)

Broadcast level (peak): 92dB SPL @1m (5 watts RMS)

Noise cancellation > 10dB (without pumping noise)

100% full duplex – no attenuation (in either direction) during full duplex

High-end performance confirms to ITU-T G.167

Acoustic echo cancellation > 40dB with conversion speed of 40dB/sec

Residual echo is suppressed to the environment noise level, preventing artificial ducking of signal

4 high-quality directional microphones

Direction-finding algorithm (determines the presence and direction of a speaker)

Beamforming algorithm (forms and directs audio beams towards a defined direction)

Automatic voice-level adjustment (AGC)


7” diameter, 1-7/8” height

Weight: 1.75 lbs

Metal case and metal grill mesh for high RFI immunity and product durability


Plug-and-play - No installation or drivers

Audio setup utility is available for Windows

The setup utility helps monitor the audio input and output level but is not required

Recording utility is available for Windows

Recording utility allows you to record conversations to your computer via the device

Operating systems: Windows 98 and up / Linux / MacOS