Poly Studio E70

Characteristic Value
Crosstalk and feed-through (any input or output channel to any other channel) ≤-80 dB, 20 Hz to 20 kHz
Frequency response (any input to any output, relative to 997 Hz) +1, -3 dB, 50 Hz to 20 kHz
Total harmonic distortion + noise vs. frequency Better than -75 dB, 50 Hz to 20 kHz
83