M-theory & Dualism: Hybrid Modeling Synth & Dual Arpeggiator

M-theory & Dualism: Hybrid Modeling Synth & Dual Arpeggiator

M-theory is a free hybrid VST synthesizer instrument that is built around the Karplus-Strong physical modeling technique, and uses samples, VA oscillators, and noise to drive the delay based oscillator, resulting in a very wide range of high quality synthetic and synth/acoustic hybrid modeled sounds. Dualism is a plugin version of the dual phrase arpeggiators and 2X MIDI utilities found within M-theory, providing you with the ability to create complex arpeggios for any synth you wish.

Features: M-theory

The best way to think about the two part oscillator section in M-theory, and how samples can work in it, is to consider a guitar string. The string is under tension, but it needs outside intervention to get it vibrating. You can pluck it with your fingers, use a plastic or metal pick, you can bow it, hit it with a drum stick, etc. In each case, the resulting sound is still very much one of a string but it will differ depending on how you chose to make the string vibrate, and with what material.

In M-theory, the delays can be thought of as the guitar string, and the exciters can be thought of as what you used to make that guitar string vibrate. So just as how different objects/materials will produce different tones on a guitar string, using different sources as exciters in M-theory will lend some of their tone to the delays, but the overall sound still is the sound of the delays and not so much the exciters. In fact, when you use samples you’ll find that remarkably little of the original sound will actually be retained, but they can have a very large effect on the tone of the synth.

M-theory provides three options for exciters: 24 built-in samples, user loaded samples, or virtual analog oscillators (including noise) and you can have two of them feeding the delays at once, each imparting a bit of its tone to the overall sound.


  • Karplus-Strong style synthesis engine
  • Dual exciters, each with the option of samples, VA, or noise sources
  • Option to load your own samples
  • Oscillator damping, pluck/bow, and tone modes
  • Independent low, band, high, and all-pass filters
  • 6 LFOs
  • 4 envelopes
  • Dual programmable arpeggiators and an extra MIDI note trigger/doubler feature
  • Built in effects: tremolo, metallic resonances, chorus, delay, and reverb
  • 320 presets

Features: Dualism


Combining two programmable phrase arpeggiators with a pitch and speed controllable MIDI doubler, Dualism allows you to create arpeggiations that are far more complex and detailed than your standard synth arpeggiator. However, all this flexibility is contained within a small and straightforward interface, letting you quickly and comfortably create complex patterns without having to feel slowed down by the UI.


  • Dual programmable phrase arpeggiators
  • Multiple playback options
  • Pattern length adjustment for each arp
  • Latch and arp bypass modes
  • 2X MIDI note doubler
  • Internal or host clock sync
  • 128 presets

Price: Free

Info& Download >> Ugo Audio / M-theory

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