Frap Tools CUNSA Quadruple Analog Multimode Resonant Filter

Frap Tools shared this in-depth look at their new quadruple analog pingable multimode resonant filter, saturator, mixer, and oscillator for Eurorack modular synthesizers, CUNSA.

They describe it as their sound seasoning tool, because “it can gently even a patch, applying a final touch, or set it on fire with a ridiculous amount of spice.”

CUNSA consists of four multimode resonant filters, with a custom saturation and feedback control that you can use independently or in various combinations and roles, thanks to “Seminormalizations”.


  • Four Analog Resonant Multimode Filters
  • Unique ‘Character’ Circuit for Feedback and Distortion
  • V/Oct Tracking and Quadruple Oscillator
  • Ping and Ring
  • Linked or Individual Filtering
  • Filter and Combo Behavior
  • Four Seminormalizations for Group Use
  • Analog Mixing Stage and Group Outputs
  • CV Inputs with Attenuators

Audio Demos:

The CUNSA is priced at MSRP of €840,00 + VAT. Find out more on the Frap Tools website for availability info.

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