Noiro-ze

A VCF after the Steiner diode filter, with LDRs instead of the diodes and a CV drive to suit, in a light-proof box on the PCB: different signals fed to its LP, BP and HP inputs can be surfed between with the CV. A VCA after the Korg PS-3100's uses up a spare op amp. Noiro-ze is Japanese slang for neurosis.

Key features

• VCF: IN LP, IN BP, IN HP and CV in, OUT; IN LP, IN BP and IN HP levels, Q, FREQ and CV knobs
• VCA: IN, CV and OUT
• 10 HP; Nonlinearcircuits publishes no current draw, depth or assembled price (it sells the DIY PCB and panel), and ModularGrid lists none