Roland's System-100m, which was built from 1979 to 1984, is probably one of the best-known modular systems. The manageable number of modules and especially the presence of several functions per module made it an attractive instrument for many a user. Behringer has transferred the classic 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 Behringer 305 Parametric EQ / Output Mixer module is ideal for being the last link in the signal path within a modular system. The two main functions parametric equalizer and output mixer are integrated and can be used independently. The equalizer is parametric and has four adjustable bands. The output of the EQs is normalized to channel 1 of the mixer, but can also be used separately. The mixer has four inputs, which are adjustable in volume and pan position. In the lower part of the module you can find the outputs, which are in small and even large jack. In addition, the Behringer 305 Parametric EQ / Output Mixer has a built-in headphone preamplifier and even a tuning oscillator for tuning the VCOs at the beginning of the signal path has been thought of. The latter oscillates optionally with concert pitch A at 220, 440 or 880 hertz.