|10 power input channels||Provide bias voltage supply (24V) or constant current supply (4 mA) for reference microphone or ear simulator|
|2 analog input channels||For Headset SPK|
|5 amplifier channels||Provide power amplify for mouth simulator or speaker|
|3 analog output channels||For Headset Mic|
OBO 3055 design to use with EAM-1014 & anechoic box, for more analog signal in/out channel and control anechoic box. It can provide bias power for Ref. microphone and amplifier function.