The Octopus is a versatile Audio Conferencing Mixer with a powerful DSP and unique technology that delivers crystal clear audio by automatically monitoring and mixing, making it easy to set up and use. Each Octopus has four microphone inputs (each input can also be designated as a unique auxiliary or sound reinforcement channel). The Octopus allows you the freedom to mount speakers and microphones anywhere in the room (ceiling, walls, and table tops). In addition, the Octopus provides unlimited daisy chain capability and allows for multiple connectivity options. The Octopus MT454-PSTN-PA comes standard with USB and RCA connectors for VoIP and Video Codec connectivity, an analog phone (PSTN) interface and a 40 watt, 4-output amplifier for powering speakers. Additional option for the Octopus is: digital telephone interface. FEATURES: Beam forming microphone array technology; Full duplex communication; Echo cancellation; Noise suppression; De-reverb filtering; Automatic gain control; Bridging; Phantom power supply (3V & 24V). This device provides an Ideal Audio Solution for: Small to very large conference rooms; Classrooms and training rooms; Webinars and web conferences; Auditoriums; Courtrooms Performance The Octopus has an extremely powerful DSP that delivers crystal clear audio through full duplex technology, supplying a true High Definition installed audio solution for your conference room. Simplicity The Octopus is designed for easy installation and setup. The unit will assess and automatically control the mixing parameters allowing you to set it and forget it. Expandable The Octopus has unlimited daisy chain capability, giving you all the inputs you need, no matter what size your room is. Flexible The Octopus enables you to have the flexibility you need in connectivity, optional features, and the ability to mount speakers and microphones on the ceiling, walls, and table tops.