The modular system once developed by Robert "Bob" Moog, including its development process, went through a long production period between 1964 and 1981. At that time, the novel, electronic instrument was an avant-garde pioneering work that still had to be explained to the public; but eventually found more and more interested parties. The modules and systems are still considered a blueprint for what a modular system is or can be and how to use it. Behringer has transferred the generously sized dimensions to the compact Eurorack format and taken great care to ensure that sound and function are in no way inferior to the cult object.
The functions of the Behringer System 55
902 VCA: VCA with switchable characteristic curve
903A Random Signal Generator: pink & white noise
904A VC Lowpass Filter: voltage controlled low pass filter
904B VC Highpass Filter: voltage controlled high pass filter
911 Envelope Generator: ADSR envelope
911A Dual Trigger Delay: delays the trigger signal for the envelopes
914 Fixed Filter Bank: resonance-free filter with 14 frequency taps
