The E440 Discrete VCF from Synthesis Technology is a discrete OTA base Lowpass Filter d system with outputs for 12, 18 & 24dB. In terms of sound, the E440 is to be found at the highest level: Density and depth as well as the character of the resonance form a balanced and powerful sound, which is rarely found.
In addition to three FM inputs for the cutoff control and one for the resonance, the module offers a drive control that ranges from discreetly thick to completely overrunning the signal. The outputs are Phase shifted, if you combine the outputs 12 and 24 dB with a mixer you get a really nice bandpass filter!
Synthesis Technology E440 Discrete VCF at a glance: