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The 1006 Filtamp Module is an authentic 16HP imitation of the classic “System 2500” circuit from the '70s compatible with a standard Eurorack case.
Consists of a 24 dB transistor ladder low-pass filter followed by a discrete VCA, with a Filter cut-off frequency is controlled by external control voltages and by the Frequency control.
Three external VCF control voltage inputs with variable attenuation respond at 1 V/Octave.
A resonance or "peaked" response at cut-off is adjusted with the Resonance control, two audio signals can be mixed and their relative amplitude adjusted.
VCA accepts the output from the VCF and modifies the output signal level according to the sum of the Gain control and external control voltages.
Two external VCA control signals can be attenuated by front panel controls.
VCA mode can be selected as either Exponential or Linear.