State-variable response. Most state-variable filters give you fixed Lowpass, Bandpass and Highpass outputs. Linnaeus instead makes each channel's response continuously variable (sweeping from Lowpass, through Bandpass, Highpass and Notch, to Low and High Shelving), with that response characteristic independently voltage-controllable for each of the two channels.

Thru-zero modulation. Linear frequency modulation normally becomes unstable as the resonant frequency approaches zero. Linnaeus is engineered to stay stable as you modulate linearly through zero into negative ranges, using either its integrated modulation oscillator or an external source via the Linear FM input.

Stereo and Ping Mode. Because Linnaeus is true stereo, you can process a stereo signal or two independent mono signals. Engaging Ping Mode turns the module into a no-input, self-contained stereo oscillator and FM percussion voice with its own sonic flavor.