Softube's Vocoder plugin offers a six-voice polyphonic carrier synth with four waveforms, perfect for vintage vocoder sounds and experimentation. It features an Attack Hold Decay Envelope, Freeze section, Transpose Chord Mode, and control over plosive and consonant reproduction. With variable band selection, stereo widening, and spectral tilt, it's a versatile tool for shaping vocoder output, with unique functions like the Shape section for re-synthesis control and Pitch Modulation for vibrato effects.