904a low-pass vcf module with 70s vintage sound, faithfully reproduces the circuits of the [modular 55, 35, 15] series the vcf has a fixed control voltage (cutoff) fricken range and regeneration (resonance) control audio input and output connectors and 3 cv inputs to control frequency all parameters can be accessed in real time with 2 controls and switches eurorack specifications: 8hp, 65ma +12v, 50ma -12v be sure to check the detailed product description at the bottom and precautions before purchasing! to request a return or exchange, please note that it is mandatory to provide a video of the unpacking of the package.