Phoenix Audio MT454-DTI Octopus USB Base Unit with Digital Telephone Interface

SKU: PHMT454DTI MFR: MT454-DTI
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Key Features

  • Enhance audio conferencing with the MT454-DTI, offering crystal-clear sound quality.
  • Easily connect to your VoIP system using this versatile Phoenix Audio conferencing mixer.
  • The MT454-DTI supports multiple inputs, perfect for complex audio-visual setups.
  • Enjoy seamless integration with existing systems using the digital telephone interface.
  • Optimize your conference calls with selectable phantom power for clear microphone input.
  • This audio conferencing accessory ensures compatibility with various speaker systems.
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Special Order Item?Estimated to Ship: 09/09/2025
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Phoenix Audio MT454-DTI Specifications

  • Inputs: Designation

    Microphone (mixer inputs), Auxiliary, Sound Reinforcement

  • Inputs: Number of inputs

    4 per unit

  • Inputs: Phantom: User selectable

    3V, 24V or none (for Line inputs)

  • Inputs: Connectors

    XLR

  • Inputs: Input Impedance (load)

    3V Phantom: 2K Ohms
    24V Phantom: 590 Ohms
    No Phantom: 2K Ohms

  • Inputs: Maximum input level

    1.8V/Gain

  • Inputs: Gain

    0dB to 42dB in 6dB steps

  • Inputs: Frequency response

    20 Hz - 16 KHz

  • Audio Out: Connectors

    RCA and XLR (the XLR is re-assigned as Link Up when the unit is configured as Slave)

  • Audio Out: Level

    Line or Mic level (user selectable)
    For Line level: 1.8Vpp Max
    For Mic level: 90mVpp Max
    Link Up level: Line (1.8Vpp fixed)

  • Audio Out: Impedance

    25 Ohms

  • Audio Out: Frequency response

    20 Hz - 16 KHz

  • Audio (Far-End) In: Connector

    RCA

  • Audio (Far-End) In: Impedance

    100K Ohms

  • Audio (Far-End) In: Level

    1.8Vpp

  • Far-End (Speaker) out: Connector

    2pin terminal block

  • Far-End (Speaker) out: Impedance

    25 Ohms

  • Far-End (Speaker) out: Level

    1.8Vpp Max

  • Com Port

    RS232 protocol available upon request

  • Power

    5V, 200mAmp (through the USB connector)

  • Dimensions (L x W x D)

    8 x 16.5 x 1.75" / 203.20 x 419.10 x 44.45mm

  • Weight

    5.65lbs / 2.56kg

About Phoenix Audio MT454-DTI

A cutting-edge solution for audio conferencing, the MT454-DTI Octopus USB Base Unit with Digital Telephone Interface is a versatile and robust mixer that leverages advanced DSP and unique technology to deliver crystal-clear audio. This unit is designed to automatically monitor and mix audio, simplifying setup and usage.

Equipped with four microphone inputs, each of which can be designated as a unique auxiliary or sound reinforcement channel, the Octopus offers unparalleled flexibility. It allows for strategic placement of speakers and microphones anywhere in the room, including the ceiling, walls, and tabletops, to ensure optimal audio capture and delivery.

One of the standout features of the Octopus is its unlimited daisy chain capability, which facilitates multiple connectivity options. This feature, coupled with its echo cancellation, noise suppression, full duplex communication, de-reverb filtering, and automatic gain control, ensures superior audio quality.

The Octopus also boasts a phantom power supply (3V & 24V) and utilizes beamforming microphone array technology. This technology enables the Octopus to instantaneously assess the signals picked up by all the microphones and decide which ones will participate in the mixing and at what level of emphasis.

The bridging feature of the Octopus allows for 3-way communication between multiple connection sources, such as telephone, VoIP, and video codec. The MT454-DTI model comes standard with USB and RCA connectors for VoIP and video codec connectivity and can connect to any digital phone via the phone's headset.

Additional options for the Octopus include an analog (PSTN) telephone interface and/or a 40-watt, 4-output amplifier for powering speakers. This makes the Octopus MT454-DTI an ideal solution for various settings, including small to very large conference rooms, classrooms, training rooms, courtrooms, webinars, web conferences, and auditoriums.

The Octopus USB Base Unit with Power Amplifier (MT454-PA) connects via digital output (USB to your computer for any session using your computer, such as Voice Over IP applications like Skype, Vidyo, etc.), analog output (RCA, XLR, Phoenix speaker output connectors), and speakers (spring-clip connectors).

The Octopus is not just about performance; it's also about simplicity and flexibility. Its powerful DSP delivers high-definition audio, while its design allows for easy installation and setup. The unit automatically controls the mixing parameters, making it a set-it-and-forget-it solution. With unlimited daisy chain capability, it can accommodate any room size. Furthermore, its flexible connectivity options and the ability to mount speakers and microphones in various locations make it a versatile choice for any audio conferencing needs.

Phoenix Audio MT454-DTI Features

  • Advanced Audio Conferencing Mixer with powerful DSP for crystal-clear sound
  • Four microphone inputs with the ability to be designated as unique auxiliary or sound reinforcement channels
  • Unlimited daisy chain capability for multiple connectivity options
  • Beamforming microphone array technology for optimal audio mixing
  • Bridging feature for 3-way communication between multiple connection sources
  • Easy installation and set-up with automatic control of mixing parameters

Key Features

  • Enhance audio conferencing with the MT454-DTI, offering crystal-clear sound quality.
  • Easily connect to your VoIP system using this versatile Phoenix Audio conferencing mixer.
  • The MT454-DTI supports multiple inputs, perfect for complex audio-visual setups.
  • Enjoy seamless integration with existing systems using the digital telephone interface.
  • Optimize your conference calls with selectable phantom power for clear microphone input.
  • This audio conferencing accessory ensures compatibility with various speaker systems.

What's in the box:

  • Phoenix Audio MT454-DTI Octopus USB Base Unit with Digital Telephone Interface
  • USB Cable
  • International Power Supply Adapter
  • 2x Rack Mount Ears
  • Male Phoenix Speaker Output Connector
  • RJ11 Telephone Cable
  • Phoenix Audio 2 Year Limited Warranty