The PeopleLink Quadro is a hybrid conference phone with a 360-degree panaudio pickup feature that captures audio from every corner of the room. Equipped with 4 bi-directional microphones, the device produces high fidelity audio quality with a 92 dB speaker output that is completely free from any background noise interference or echoes. The Quadro also includes built-in AEC, AGC, and ANS for acoustic echo cancellation, automatic gain control, and acoustic noise suppression. With DSP-based echo cancellation and noise reduction, the device delivers reliable audio output. The Quadro is recommended for a 30ft by 20ft oval-shaped conference room with a capacity of 15 to 20 people.