The I-o47 Multimode Resonator/Filter is a modern take on a vintage design with some extra features and quirks built in. With CV controllable centre frequency, resonance/Q and notch offset along side FM, strike and a complex dual input with wave shaping limiter, the I-o47 is truly a filter for all occasions.

Features

• Centre frequency range 16Hz to 16KHz

• 1V/octave, Coarse and Fine frequency controls

• FM input with attenuverter

• Low pass 12 dB/octave

• High pass 12 dB/octave

• Band pass 6-12 dB/octave dependent on Q

• Notch with variable offset

• Input with gain control

• Inverted input with resonance dependent gain

• Strike input for pinging the filter

• Feedback switch enhances resonance and allows for self oscillation

• Limiter based on tanh wave shaper which affects primary input (post gain fader)