Veils (original)

Mutable Instruments' first quad VCA, from 2016, in 12 HP: four voltage-controlled amplifiers whose response runs from exponential to linear, their outputs chained into a mixer.

Key features

• Four VCAs, each with a gain knob that sets the CV amount, or the gain itself when no CV is patched
• Response curve continuously variable from exponential to linear, with gains above +20 dB in exponential mode
• Outputs daisy-chained: an unpatched output adds its channel to the next one, up to a mix of all four on output 4
• DC-coupled inputs for audio or CV; gain CV inputs normalled to +8 V
• Bicolour lamps showing each output's level and polarity
• Made from June 2016 to September 2020; the design is open source