MFB Eurorack - OSC-03 Triple VCO


Analog triple VCO with the oscillator circuitry of MFB's Kraftzwerg synthesizer. The VCOs can be played with one common voltage or with individual CVs. They feature switchable wave forms and octaves, pulse width modulation, sync as well as digital ring modulation und digital noise. An internal mixer allows for oscillator mix but individual outputs are available, too.



Each oscillator has switchable wave forms: triangle, square and sawooth. All VCOs have an octave switch (16', 8' and 4' for VCOs 1&2 and 32', 16' and 8' for VCO3). Due to normalizations of the pitch CV sockets you can play more than one VCO with one CV but of course you can address them separately. VCO 1 and 2 or VCO1 only can be synchronized to VCO3 or an external signal. Signals of oscillators 1 and 2 (jumper selectable: 1 and 3) can be ring modulated digitally.
Input CV4 can control pitch or PWM of VCO1, CV5 pitch or PWM of VCO1 and CV6 pitch of VCO3 ar of all VCOs.

Besides the cascaded individual oscillator outputs there is a signal mixer with a digital noise control.


As the oscillators' cores are entirely analog the module needs to heat up for 5-10 minutes in order to be stable.
The module can read pitch CVs from Doepfer's internal buss.


1V/octave inputs CV1-3, modulation inputs CV4-6
ring modulator out, individual outputs 1-3, mix output


3U Eurorack module, 21HP wide (107mm), 25mm deep

0.2 kg
Article Number

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