The Mutable Instruments Streams consists of two signal dynamics processors featuring a voltage controlled filter (VCF) and voltage controlled amplifier (VCA). Unlike many VCA's, Streams features a unique 'Excite' input that normals to an on-board envelope generator to shape the dynamics of the incoming signal. Additionally, this envelope is processed by a digital recreation of a vactrol circuit allowing warm and natural plucked sounds. Another fantastic feature is when streams' VCF is disabled there is an internal compressor limiter that can be used like a side-chain circuit. 

Specs: 12HP, +12V: 100mA ; -12V: 30mA