The Mamba Mix extension system enables a customer to expand 8, 12, 16 or more IEMs as the need grows. The input 16 channels from Main Mamba Mix system (Mic level or Line level) are passed to the Mix extension system via cat5 cable. If you have more than one extension system then you can use a simple ethernet switch to connect as many as extension system. All extension systems would receive the same inputs (16 channels) from the main Mamab Mix system. The 4 stereo mixes are available as XLR balanced as well as TRS (direct headphone) for different application scenarios described. The key difference between Mix Extension system and Mic or Line Level Mix system is the absence of analog inputs as these are via cat5. Otherwise, all functionalities are identical to Mic Level Mix Sytem. Please click on each tab for more information on this specific product as well as download section for user manual, technical specification as well as other useful documentation to learn more.