MAM MB 33 / MB 33 mkII

MAM MB-33 Image

MB 33

The MB 33 is a rack-mounted TB-303 clone released in the mid-nineties by German synth maker MAM (Music And More). It's basically identical to the Freebass 383 (which had a different front-panel design). It is a true analog monophonic bass synthesizer with MIDI implementation so you can create 303-like bass lines from your sequencer. Its single VCO offers the same two basic waveforms as the TB-303: a sawtooth and square wave. But in the MB 33 they can be mixed together for a more interesting tone than the 303 could originally produce.

Additional knobs control the VCO tuning, filter frequency cutoff, resonance, envelope mod amount, envelope decay time and accent intensity - the same controls found on the TB-303! The 24dB lowpass filter can also produce the characteristic sound of the 18 dB filter used in the original 303. There's also an auto-slide function (4 octave range) for producing those 303-style slides and a separate input for filtering external signals through it. Unfortunately there is no program storage.

MAM MB-33 II Image

MB 33 mkII

The MB 33 mkII (pictured above) released in 1998 adds a few more features. The 24dB filter has been replaced by an 18dB filter just like the original TB-303 used. A new sub-oscillator was added and can be mixed with the other two waveforms for even meatier mono-bass sounds. A new distortion effect is also present and can be dialed-in to dirty things up - sounds great when resonated at high frequency cut-offs! MIDI can send/receive controls for the cutoff, resonance, ENV mod, accent, decay, distortion, and autoslide on/off.

Whereas the original MB 33 and Freebass 383 before it sounded very much the same as the TB-303, the newer MB 33 mkII adds even more possibilities for creating your own unique 303-like sounds - and at a fraction the cost of an original 303!

Lookup MAM MB 33 / MB 33 mkII Prices

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  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - Monophonic
  • Oscillators - 1 VCO with mixable sawtooth and square waveforms.
    MK II adds a sub-oscillator
  • LFO - None
  • Filter - MB 33: 24 dB/oct lowpass filter (MK II uses an 18 dB/oct filter) with cutoff-frequency, resonance, ENV-modulation controls
  • VCA - Decay-time (200 ms - 2,5 sec.) VCA separate ENV-generator with non controllable voltage assignment. ACCENT pot for accent-intensity; can be activated at velocity parameters greater than 120.
  • Keyboard - None
  • Memory - None
  • Control - MIDI, CV IN to VCF
  • Date Produced - 1996 (MB 33)
    1998 (MB 33 mkII)
  • Resources & Credits
  • Images from MAM.

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