Transformer Isolated Microphone Splitters are constructed in a heavy duty rack-mount enclosure with female XLR inputs and male G-Block multipin outputs.The rack-mount design can be easily mounted for both permanent and mobile applications. Matching multi-channel trunks and fanouts are available. Ground lift switches are provided for each channel. Each microphone splitter features a 1:1, 1:1:1, or 1:1:1:1 turns ratio bridging transformer with a single primary and one, two, or three secondary windings. Transformers also maintain separate faraday shields and reject common mode noise caused by the voltage differences between the chassis of the multiple mixers. Phantom power can be provided through the direct output.