The MicMix DynaFex D-2B is a vintage single-ended noise reduction unit designed to reduce background noise in audio signals through dynamic and low-pass filtering. It is particularly useful for cleaning up found sound sources or samples, providing a simple threshold setting that automatically tracks and adjusts the signal level. This unit is a standard 19″ rack-mountable device, known for its ease of use and reliability in handling noisy audio environments. It operates with dual voltage (110/220V) and features barrier strip inputs and outputs, making it versatile for different setups