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MFB Microzwerg Semi Modular Analogue Synthesizer


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The Microzwerg not only bridges the gap between Nanozwerg and Kraftzwerg. Due to its dual multimode-filter, it also offers an individual signal-path with specific sound potential. The Microzwerg's numerous patch connections are simply inviting to be modulated by our flexible step-sequencer Urzwerg or to interact with the multifunctional Megazwerg.

Individually operated and due to its dual oscillators and dual multimode-filter, the Microzwerg offers a lot more than typical analogue basses and lead sounds. Prepare yourself for some special timbres. The signal path and modulations are quickly reconfigured using a few patch chords with the result of an enormous boost in sonic variety. Combined with other members of MFB's Zwerg synthesizer family or even a modular system, the Microzwerg's possibilities grow further.

Both oscillators offer triangle, saw tooth and rectangle waveform shapes. Where oscillator 1 also offers a needle impulse, VCO 2 has a built-in noise generator. VCO 2 can be detuned by plus minus one octave in reference to VCO 1. Both oscillators can also be synced, using a patch connection. In addition, the separate output of VCO 2 can be used to modulate the filter. Finally, ring modulation is possible in combination with Megazwerg, where the ring modulated output can be fed back into Microzwerg.

The 2 state-variable multimode-filters run with 12 dB slope per octave and offer lo-, hi- and bandpass-modes as well as notch-filtering. The filters are prewired in series to increase the slope when used in same operation mode. Here, the slope is variable because both cutoff-controls can be shifted against each other using the slope control. Combining a lo- and hipass-filter result in a variable band pass with adjustable bandwidth and individually controllable resonances. When preferred, a parallel routing is possible using a patch connection, too. In this case, the Microzwerg allows two separate shifted bandpass-filters, notch-filtering with variable bandwidth or a combination of bandpass-filter with followed lo- or hipass-filter. Resonance can reach up to self-oscillation for both filters. The cutoff-frequencies are manually controlled simultaneously or by envelopes. They can be shifted against each other using the space-control. Modulations by LFO or CV can address either filter 1 or both filters.

A simple patch from Key CV to the contour- or mod-input can achieve pitch-dependent cutoff-frequency control. Because both filters offer independent in- and outputs, the Microzwerg is also destined to be used as an effective dual-filter for external sound sources.

The ADSR envelope is internally prewired to control the filters' cutoff-frequency. The Megazwerg or any modular system can jump in via patch chords whenever a second envelope is needed.

The 2 LFO offers four waveform shapes each and a one-shot-function, where the selected waveform is played only once after a gate-trigger, thus imitating a simple envelope that might be used for pitch or VCA control. LFO 2 includes a sample & hold.

Internal modulation wirings offer LFO control over the filters' cutoff as well as the oscillators' pitch or VCO 2's pulse width. LFO 2's speed can be modulated by an external control voltage, allowing increasing or decreasing the speed by a factor of 30. Using this feature, the Microzwerg is capable of extreme slow and fast modulations.

The control signals of the envelope and both LFOs are available as CV-outputs and can therefore be used to control other functions of the Microzwerg as well as in other analogue synthesizers and modular systems.

The signal-path VCO 1/2-VCF 1/2-VCA as well as the common main modulations is internally prewired, so that the Microzwerg can be played immediately. All further routings are created using the patch jacks. These can be used or controlled by the Microzwerg itself or any compatible external device.

The Microzwerg can be controlled by MIDI from any compatible keyboard or DAW. Note commands are received as well as pitch-wheel (+/- 2 semitones) and modulation-wheel data, the latter controlling the filter's cutoff frequency.

  • Semi-modular analogue synthesizer
  • 18 patch connections in signal chain
  • CV/Gate
  • MIDI control
  • External power supply included
Oscillators Per Voice Dual oscillator
Filters Dual multimode-filter
Modulation Two LFOs with „One Shot“-function / ADSR envelope
Inputs Separate inputs/outputs for both filters
Outputs Separate inputs/outputs for both filters

If you decide an equipment item is not suitable within 10 days of delivery, you can return it to us for a replacement or refund. Returns must be unused and in their original, undamaged packaging.

Gifts purchased between 30 November and 24 December may be returned by Friday 6 January 2016”.

Some items are excluded from our money back guarantee, including:
• Computer software that has been unsealed or registered
• Any item that comes directly into contact with the nose, ears or mouth

To arrange a return, just contact our customer service department on 020 7424 2800 or email us at