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    Quattro3 USB and Telephone (MT302)


    • Overview
    • Features
    • Connects To
    • Specifications
    • Resources

    The Phoenix Audio Quattro3 (Q3) is a high-quality conference speakerphone that will turn any room into a professionally sounding 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 MT302 model connects to any computer as well as any analog PSTN phone line. It comes equipped with a built-in keypad and LCD screen.

    The Quattro3 MT302 is an ideal USB and Telephone solution for:

    • Small offices or home offices
    • Small to very large conference rooms
    • Classrooms and training rooms

    The Q3 is compatible with PC (Windows and Linux) and Macintosh (MAC OS).



    • Four microphone beamforming array
    • Full duplex communication
    • Echo cancelling
    • Noise suppression
    • De‐reverb
    • Automatic gain control
    • Daisy chainable
    • Single source daisy chain powering
    • Bridging between USB and PSTN
    • Internal battery
    • Fully functional dial pad with backlit LCD screen
    • Interchangeable interface modules
    • Durable aluminum casing
    • LED lit control buttons


    • USB cable
    • International power supply adaptor
    • Daisy chain cable (Ethernet)
    • PSTN phone cable
    • Installed dial pad with backlit LCD screen
    • Interchangeable wire slot cover
    • User manual


    The Quattro3 MT302 USB and Telephone 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.).

    Telephone line – this connection is done via RJ11 connector and a telephone cable directly to your telephone infrastructure and is for any standard PSTN (analog phone) telephone call.


    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)

    Three-way bridging capability

    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)


    Dimension: 7” diameter, 1-7/8” height

    Weight: 2 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


    7 hours of battery talk time with secondary interface


    USB cable

    International AC adapter

    Daisy chain cable (Ethernet)

    Telephone cable


    Two Years