VirSyn Intros Poseidon Synth For iPad

VirSyn has introduced Poseidon Synth for iPad, a new software synth that combines the conceptual simplicity of analog synthesis and frequency domain based Spectral modelling synthesis.


Spectral model oscillator

Select a basic sound model from over hundred delivered with Poseidon. The basic sound model determines the sound characteristic you want to start: taking a artificial model like “Sawtooth” gives you analog style sounds. Use complex models from analyzed samples for earth shaking ambients and evolving pads.

Model parameters

High level controls allow for changing the spectral shape, the harmonicity and balances the level of residual noise and spectral amount of the oscillator model.

F-Domain Filter

The newly developed F-Domain filter allow for drastic changes in the resulting sound spectrum. Five filter types including lowpass/highpass characteristic can be used to shape the sound. They have the usual controls like cutoff but also very unusual ones like a variable slope ranging from 0 dB to 72 dB / Octave and independent controls for resonance and bandwidth! This kind of controls are only possible in the context of our F-Domain synthesis technology. This results in an extremely clear filter sound with breathtaking fast modulation possibilities.??The filter type “Inverse” interprets the sound model as a “Source” and a resonant body “Filter”. The cutoff parameter shifts the filterbase – this is the equivalent to making the instrument body smaller or bigger.


This simple control gives your sound a distinctive moving distribution in the stereo panorama. Every atomic sound particle has it´s own path through the space !

Sound browser

The sound browser in Poseidon gives you a fast selection of sounds based on category and timbre.

Spectral modelling synthesis

• Harmonic/Inharmonic/Noise sound models
• 512 oscillators per voice
• 300 Sound models / 600 factory presets

Unique sound control

• Pitch modulation / Harmonicity control
• Time machine
• Timbre control
• Frequency Domain Filter
• Spatializer


• Uses programmable sequences with up to 32 steps.
• Can trigger single notes and chords.
• Unique randomiser generates Arpeggios with 100% usability.
• 32 Arpeggios included, unlimited user arpeggios possible.
• For each step you can program tie, accent, transposition and note order


• Chorus
• Phaser
• Flanger
• Distortion (aliasing free!)
• Equalizer
• Echo/Delay
• Reverb


• Audiobus 2 compatible (Input slot)
• Inter-app audio compatible (Instrument/Generator)
• CoreMIDI / Virtual MIDI / Tempo Sync / MIDI Learn
• Audio recorder with Metronome.
• Audio pasteboard / File sharing.

6 thoughts on “VirSyn Intros Poseidon Synth For iPad

  1. Yet another fancy iOS synth with tons of personality.

    My quick first impressions are positive. However, I immediately notice that it has disappointingly few modulatable parameters.

    Also, VirSyn’s arpeggiator is sadly unable to do triplets. Boo!

  2. This was an immediate download for me as I really enjoy this type of re-synthesis in the frequency domain.

    However I must say I’m a little disappointed by the synth, unless I’m mistaken, it only has 1 oscillator so you can’t create sounds that would blend two distinct sounds at different pitches or modulate in interesting ways. And this is reflected in the presets which generally lack depth & modulations. Usually with a synth like this I’d find lots of inspiring presets that I’d happily jam along to for a few minutes each if not a half hour. Sadly not the case here…

  3. I feel the same here. Virsyn makes nice iOS synths but this one is dissappointing in the modulation options and routing catagory. I am wondering if I should just get my money back on this one…probably will.

  4. I believe the developers may have been a bity premature in bringing this app to market. I paid the $10.00 to download and, unfortunately, it doesn’t work on my Ipad. Period. Maybe after a couple of updates?

    1. have you double check to make sure no other apps may be running???

      Have run into issues on ipad were certain audio apps will not work if certain other apps are running

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