Biamp Tesira SERVER-IO20 20000 Hz, 108 dB, 100~240VAC 50 60Hz, 150 W, Input Impedance (balanced): 8k, Output Impedance (balanced): 200 The Tesira SERVER IO is a digital network server. It is factory configured with one DSP 2 card and is capable of handling up to two additional DSP 2 cards. The SERVER IO has capacity for up to three total audio networking cards per server. The combinations of networking cards may include one AVB 1 Audio Video Bridging network cards, up to