The microphone splitter splits signal from low impedance microphone (or similar source) into three outputs, enabling three microphone preampliers to be fed from one source. Some applications include musicians' on-stage monitoring, live recording, ENG use at press conferences, and videotaping of lectures, public speeches, etc. It can also be used simply as an isolation transformer for long microphone lines feeding unbalanced inputs, or for any audio signal up to 0dBv (0.775 volt). Transformer isolation in such situations minimized interference from EMI/RFI and ground loops. The transformer-isolated feeds retain the advantage of common-mode noise rejection inherent in the use of balanced lines. The MS3 is fitted with standard 3-pin XLR-type connectors for INPUT, DIRECT OUTPUT, and ISO OUTPUTS 1 and 2, so hookup requires only standard microphone cables. The use of the Pro Co MBT-2 transformer allows the MS3 to provide two floating, low impedance outputs with wide, flat frequency response, ultra-low distortion, and minimal ringing or overshoot to degrade transient response. The transformer's triple electrostatic shields and GND/LIFT switches provide isolation and buzz-free operation in virtually any environment. The MS3's ruggedly constructed Uni-Box enclosure is formed of extruded aluminum side channels and 16-gauge steel top, bottom and end plates, and is designed to protect switches and connectors from accidental damage. The use of steel also provides excellent magnetic shielding for the transformer from 60Hz AC hum fields. Top quality connectors and switches provide trouble-free service even in abusive situations such as remote recording and broadcast operations.