POLY SoundStructure C16 teleconferencing equipment

POLY SoundStructure C16. Input impedance: 10000 Ω, Phantom power: 48 V. Output gain: -100 - 20 dB, Maximum output amplitude: 23 dB, Output impedance: 50 Ω. Audio connections: 3.5 mm. Input voltage: 100 - 240 V, Input frequency: 50/60 Hz. Dimensions (WxDxH): 19 x 13.5 x 1.77" (483 x 343 x 45 mm), Weight: 12.1 lbs (5.5 kg)